Aggromuffin, you sound just like me back in 2004 when I bought my boxster.
I've owned and enjoyed it for many years, but the first few years were expensive and difficult. All the gremlins that had not appeared or were ignored by previous owners came out and I felt the need to address them all asap.
With this said, don't piss away money on new rims or interior bits or performance mods right away... you may well need this money for repairs in the first few years. Trust me. The better deal you get on a Porsche translates into the more money you'll need to spend on it initially to get it in good shape and make it a reliable driving car.