It's a possibility. I'm still working out the kinks, but my current plan is based around the G-5 because the parts are already available. Also, I'm kickstart-crazy. As usual, though, the best course of action seems to be to watch, and wait patiently.
...but I want one nooooooooooow!
EDIT: Also, there's just something about the proportions of the C-5 that offends me. I don't know for certain what it is, and it probably doesn't make any real sense, but my gut instinct is to go for the G-5.