You got me with the title! However, if you're going to call it "Air Calvary" I think you need some more terradons!! Or, if you're going more for the modelling aspect, you could do something with cold one riders. I like your choice of characters, but there's no way that steggy's getting off the ground- I don't care if you put a jet engine on it
Witty title aside, I think the list has merit- I'd be interested to see how you use your "big stick" (carnosaur) with the main block of your army being pretty slow.
Also, do people tend to play at 2K in your area? I originally expected more games at that point level, but people are usually looking to go to 2250 here if you're already up to 2000.