yeah my car is all black as well...freaking hot in louisiana...it's also idling really bad once it gets hot (drive for like 20 minutes), come to a stop and the idle hangs at 2k instead of the normal 0650, but that only happens if the AC is on or the defrost is on....I replaced the IAC valve last year, so idk what's up with it.
I finally saw an s550 that I liked, all black, lowered, FBO w e85...put down 453 to the rear wheels...but, you can get that with a bolt-on pulley swap tuned terminator for a lot less money
I went without a fun car for 10 years, sold my vortech'd 99 GT after I got married b/c it was too much money for us at the time...hard to really give you advice on this, but just make sure you and the wife have a written out budget to follow, b/c this will make saving your money soooooo much easier, and allow you guys to hit your financial goals alot faster. We've always used the Dave Ramsey Financial Planning as a guide...You can skip over the "Christianity" part of his message, but the financial advice is pretty sound and has put us in a good place so far.
My boy has an s550, it's a nice ride and very fast