I've never put out more than two decoys for turkeys... mainly because it's all that I've had. lol I've had great luck with a hen and jake combo, with a DIY cardboard fan on the jake. You know what... I take it back... Last season while hunting with a buddy we set about 4 or 5 dekes out and we pulled in 4 jake birds. Here's my thing... I hate carrying a bunch of crap while turkey hunting. With the HS strut seat, a turkey wing, and a couple decoys, that's about all I care to lug around. As far as the tom decoy goes, you can use it whenever. I've heard that some longbeards and jakes will be intimidated by it, but you sure see a lot of the so-called "hunting pros" using full-strut dekes so they must be effective.
A little bit of movement in the wind is perfect. You never see live turkeys standing still like statues do you? Especially toms that are in strut... They're spinnin around, showing off their fans pretty much non-stop. That being said, I don't think the movement you'd get from a day like today with 30 mph winds would look very realistic.