I don't differ in my selections for players I control or don't. Sure I'd love to have a fast FS, but if I can get a 93 spd 70 ovr or an 85 spd 79 ovr, im taking the 79 ovr.
As far as schemes, I disregard them for the most part and go with the best players. The only positions I actually check schemes on are DL and LB. I make sure that they are 3-4 for me personally, and that's about as far as I go with schemes.