Hey fellow Texan!
Welcome to AF. Now after reading that you said you don't want a small car but will have around $15,000 by December, I see you have your goals set and that's nice to see. As for the RSX, have you ridden in one? It is a small car, but is somewhat roomy, like the Integra. But while they are roomy I still consider them kinda cramped for my standards(I drive a '99 Silverado by the way). I don't know if your into Imports(Honda/Toyota) or Domestics(Chevy/Ford) or if it even matters to you. You can always find used Camaros and Mustangs for around that price and can have an excellent performing car(even more so with the camaro
). And a few mods and you can be running a high to mid 12 second car. Since you say you don't like small cars, what exactly do you consider small cars? I consider Civics, Accords, Eclipse, RSX, etc, small cars. Once I get more info I'd more be more than happy to help you out with idea, and I'm sure others here at AF are ready and willing as well.