I've been giving this some thought too for No. 2. With DS we just did everything on schedule (except chickenpox), but want to be a bit more selective second time round. I think we'll more or less go with Schmickers' schedule for high-risk (since DS is in daycare).

How do you find a doctor who'll work through this with you? How hard is it to split vaccines, or is it even possible? From what I've heard it's difficult to get separate vaccines?

I don't want to do HepB and don't think diptheria or polio are necessary, either. Also wouldnt' mind delaying tetanus till baby is walking. Whooping cough though I'd probably do, and HIb and peumo-thingy. But maybe later than 2 months....
Also like to push MMR or even jsut measles to 2+.