^List updated 2/23 in the PM.
Also - I will start adding more info on those going (i.e. anyone going with you and type/color/model of your Xfire).
As far as the Crossfire info goes, I think I have most of your info, but please correct me if needed:

1. RPM + wife
- Black 2005 SRT6 Roadster.
2. FP + wife (maybe)
- Black 2005 Limited Roadster.
3. MI1XFIRE
- Alabaster White 2005 Limited Coupe.
4. X FIRE N
- Aero Blue 2005 Limited Roadster.
5. fuzz 40
- Aero Blue 2005 Limited Roadster.
6. crossfirefrank
- ????
7. +fireamx
- Alabaster White 200? Coupe
8. RickZ
- Black 2005 Coupe.
9. 04Fire
- Graphite 2004 Coupe.

I think these others were interested in coming too (just haven't heard for sure):

harbor
Fritzauf
kmag52

I also sent some PMs to forum members in MI.