Go with the Speed Grip E or what ever they call it and forget a motor winder.... it was probabaly designed by Kodao anyway..... blasts thru too much film.... think between your shots.... also puts a lot of heavy work on your backs, too..... use that loot to get more backs.....220 backs, while 220 film is still around are a good way to go 30 shot/roll.... keep you from changinf film all the time and a 40mm lens with the 135w back will make some of the best panorama you ever saw....have some fun!
Logan
One very usefull feature of the Speedgrip E (and, I believe, the power winder) is that it has a hotshoe. I don't use flash, but find it very handy to fit a spirit level to - one of those clear plastic ones that works in 2 dimensions.