hehe, i'd love to be with your delima, believe me.
in my opinion the best choice for that kind of car is an STI. the EVO is almost perfect - that's true, but when it comes to mods, an STI's engine is much more capable and tuning accepting. do yourself a favor, and stay away from any American cars - they suck. yes they can be tuned nicely, but they are gas guzzling and most of em handle like my behind.
i'd suggest also considering buying a Honda coupe let's say and modding it. it would cost you less to purchase, which will leave you tons of cash to create a beast of a ride. my friend spent 30,000$ on modding his Accord, and now he actually manages the 1/4 mile in less then 13 sec.
good luck