Hi Peter,
Definitely do not do them at the same time. That's insane! It's much better to wait one, two days between surgeries. :-) *rim shot*.
All joking aside, I had bilateral resurfacing with Dr. Gross on a Monday and Wednesday in the same week *exactly* one year ago today. I'm doing great. I wouldn't hesitate to do go for the bilateral option all over again. If you waited far longer than you should have, and let your hips deteriorate really bad like me, then it's a no-brainer. I don't think I'm stretching the truth when I say that for normal activities (walking, sleeping), I was already better at 2,3 weeks post-op then I was before the surgeries. So for me, if I'm going to be moving around for a few months with a semi-sore hip occasionally (which by the way, should be much less sore compared to the pain you feel before the surgeries), why not get them both done and get it over with?
As Quig recommended, head over to the Bilateral Stories section and read our accounts.
Good luck with whatever you decide.