There is something to be said about building your own car. It's rewarding, expensive, time consuming and the feeling of accomplishment is awesome.
Some people say they would never sell their Z, but life can have it's unexpected turns and you end up selling your car for much less, typically far less then you could imagine.
To me now, it's not about not doing the work or the lack of enjoyment received by doing it, but the lack of money as a Husband, father and sole provider.
Your young, so you don't have these issues. Currently though, times are very hard for people out there and deals can be had. The savings by spending more initially can far outway your wildest expectations in the end.
I paid $3750 for my current Z. The original Z lover put over 16K into my car and many of those things I wouldn't have done.
Take the time to look around, deals are out there.