Well, just my opinion...but I'd consider keeping the plants under CFLs for at least 10 days; two weeks would be better. The plants will be halfway through the seedling stage by then, and you should have enough leaf area to really take advanage of the extra light of a MH/HPS.

But, yeah, keep them far, fara away at first. CFL to MH is a shock; you'll crisp up your leaves if the lights too close. (Been there, done that.) You'll either lose the plant or lose a 2-3 weeks of growth while the plant recovers. Still, I haven't seen anything to indicate that plants grow faster under a MH in the first 10-14 days. After that, yeah.