I'll give it a go, however I'm going to cheat on the species list, money spent, and probably on the mixed species, at least in terms of them being proven, I don't think any will be crazy though. So sorry about that. I will stick to the 30 part.
India!:
1. Mixed species: Asian Elephant(1.5)/Black Buck(4.4)/Hog Deer(4.6)/Axis Deer(3.5)/Swamp Deer(3.3)/Sambar Deer(3.5).
3 connected enclosures, main one 4 acres with large pool, river, marsh area, forested area. Second enclosure 2 acres for elephants with basic elephant house in between both enclosures, hidden by trees and vines, large pool, decent amount of trees. Third enclosure for deers, 1.5 acres, river continues into this exhibit. Basic dirt trail(throughout India except himalaya area which will have stone path) to on one side of this exhibit with a couple of elevated viewpoints, including one that goes far into the exhibit.
2. Mixed Species: Indian Rhino(1.2)/Gaur(2.4)/Nilgai(3.3)/Barking Deer(4.6)/Indian Wild Boar(1.2).
2 connected enclosures, main one being 3 acres with decent size pool, small river which goes from elephants exhibit to the pool, mud area, decent amount of trees. Other enclosure is 1.5 acres with decent amount of trees.
3. Bengal Tiger(1.1): 2 enclosures with both being 1.5 acres and the ability to combine them. Small waterfall in one exhibit which leads to stream through exhibit which carries into other enclosure. Tiger can view rhino mixed species exhibit from top of waterfall. Both enclosure lush with trees and foliage. Glass and open viewing in enclosure with waterfall, mesh fence in other.
4. Indian Leopard(1.!): 2 enclosures with both being 1 acre with ability to combine them. One mesh enclosure with lots of trees for climbing/shade, second with glass and open viewing with plenty of trees and lots of plants, small stream.
5. Mixed Species: Lion Tailed(3.3) and Long Tailed Macaque(3.3). .8 acre, lots of trees, heavily planted. Glass and open viewing.
6. Mixed Species: Hoolock Gibbon(2.2) and Hanuman Langur(3.3). .8 acre, lots of trees, heavily planted. Glass and open viewing.
7. Mixed species: Indian Flying Fox(4.4)/Indian Pangolin(1.1)/Indian Crested Porcupine. .3 acre, indoors, reverse day and night, glass and harp wire viewing. Lots of trees.
8. Asiatic Lion(2.3): Two enclosures, both at 1.5 acres. Forested. Glass, open, and mesh viewing.
9. Dhole(3.3): 1 acre. Forested. Glass and open viewing.
10. Reptile exhibit with more space than most reptile exhibits:
Gharial(1.1) with underwater viewing. Indian Water Monitor, Bengal Monitor, Indian rock python with underwater viewing, Reticulated python with under water viewing, King Cobra, Southern Flying Lizard, Fan-throated lizard, Rhoux forest lizard, Indian chameleon, and turtle exhibits with Asian leaf turtle, Cochin forest cane turtle, Crowned river turtle, Indian roofed turtle, Indian eyed turtle, Narrow-headed softshell turtle, Indian flapshell turtle, Indian peacock softshell turtle. Plus various other snakes and lizards.
11. Indian Striped Hyena(3.2): Two enclosures that can be combined into one, total 1.2 acres. Glass and open viewing.
12. Gee's Golden Langur(2.2): .4 acre, mesh enclosure with glass viewing section, high trees.
13. Sloth Bear(1.1): Two enclosures that can be combined into one, total 1.5 acres. Trees for climbing, stream and small pool. Glass and open viewing.
14. Himalayan Wolf(2.3): 1 acre, open and glass viewing. Rocky and hilly enclosure with decent amount of trees and a stream.
15. Snow Leopard(1.1): Two enclosures that can be combined, 1 acre each, very hilly and rocky with some trees. Glass and open viewing.
16. Red Panda(1.1) Two enclosures that can be combined, .3 acre. Lots of trees and heavily planted. Glass and open viewing.
Heart of Borneo(Rain forest and conservation theme):
17. Mixed species with Bornean Orangutan(1.4) and Agile Gibbon(2.2): 1.5 acres with lots of trees for climbing, rain forest look to exhibit. Glass and open viewing.
18. Mixed species with Proboscis monkey(2.2)/Maroon Langur(2.2)/Pig Tailed Macaque(2.2): .6 acres with glass and mesh viewing, otherwise same as above.
19. Sun Bear(1.1): Two exhibits that can be combined, 1.5 acres total. Lots of trees and well planted. Glass and open viewing.
Gabon(remote jungle theme):
20. Western Lowland Gorilla(1.4): Two exhibits that can be combined, main one being 2 acres, other being 1 acre. Lots of full grown trees and plants with a forest clearing where a stream. Glass and open viewing.
21. Chimpanzee(2.4): 2 acres, otherwise similar to above.
22. Mixed species with Hippo(1.1)/Sitatunga(2.4)/Forest Buffalo(1.2)/Red River Hog(1.1): Two enclosures that can be combined, first being 1 acre, other being .75 acre. Underwater viewing, stream leads to pool. Muddy area as well. Open viewing as well.
23. Mixed species with Mandrill(1.2) and Black Colobus monkey(2.3): .6 acre, mesh and glass viewing. Lots of trees and plants.
Everglades(elevated boardwalk pathway):
24. American Alligator(4.6): Large water area with basking spots, with boardwalk going over water, underwater viewing as well at end of exhibit. 1.5 acres. Turtles and fish also in water. Small reptile section on opposite side of underwater viewing.
25. Florida Panther(1.1): 1 acre, wetlands. Glass and open viewing.
Yellowstone:
26. Mixed species with Bison(4.7)/Elk(3.7)/Mule Deer(5.5): 3.5 acres with a stream, lots of trees, and plants. Open viewing.
27. Grey wolves(3.5): 3 acres, similar to above but more hilly and some glass viewing too.
28. Grizzly bear(1.1): 2 enclosures that can be combined, 2.5 acres total, pool with underwater viewing, stream leading to pool, fish in stream/pool. Lots of trees and plants. Open viewing as well.
29. Moose(2.4): 1.5 acres, pool with stream leading to it, north pacific rain forest type of habitat.
30. Canadian Lynx(1.1) Two enclosures each .5 acre with lots of trees and plants, some rocks and somewhat hilly terrain.