I didn't have the information they do.... But given what I have, I put Lewis at first, Culpeper short, Lee third. And just roll with it all year.
But I don't think that's your actual question. I think defense matters. Moving Lee and Culpeper around won't help that at all. I see no good path to a good shortstop by moving Culpeper to second or third two days a week.
I pick the guys I believe in, and play them most every day.