I use 1007 all of the time for alts. I typically ferment at 66-68 and they turn out just fine. However, my experience with 1007 is that it ferments normally, IOW, I've never had one take more than 5 days. Don't worry about it fermenting again in the secondary. I don't "secondary" my alts, but I do give them a lagering phase of 30 days or so. They always turn out fantastic.