Wait for Penryn.
I'm in the same boat, or similarly.
Right now I already have my GA-X38-DQ6 running with a temporary CPU/Memory combo (E6600 and some Kingston DDR2 800Mhz), thanks to a friend of mine who didn't use his second non-server system. I like that temporary solution, but I wanted to go with Penryn in January or February (or maybe March, because I have read that Intel might have delayed their Quad Core Penryns until March, however the Dual Core Penryns won't be delayed).
If I hadn't had the chance to get the temporary CPU and Memory, I would have waited and kept my system from my sig, definitely. I wanted to go with a Q9300 or maybe Q9450 depending on my financial capabilities when the day of release arrive. It would be a little dumb to go with anything else than Wolfdale (Dual Core Penryns) or Yorkfield (Quad Core Penryns) right now. It's just looming right at the corner, I mean two months of wait isn't a lot, it'll go by fast especially if you have a job (we all know that working helps burn time, you often don't see weeks and months pass by).
Be patient my friend, good things come to those who know patience. I know how tempting it is. I myself would like to just call my friend, tell him I want to give back his stuff and go buy some Q6600 G0 and Corsair Memory right now, and I do mean this very day as I type this line. I could do it if I really wanted to, but I won't, I would just regret it when February comes, and I would tell myself "dammit ... it happened so fast, the Q9300 is already there and now I can't buy it anymore", nah, no way I would accept such a defeat.