I would go with a feeding hen or hen and jake combo if you really want to use decoy's. The Tom is ok if all that you want is the dominante tom in the area but still often will scare wise birds from what I have seen.
This is the route I went, have a jake and 2-3 hens. I can't remember where CaptJJ got his, but they look very realistic.
I agree with CaptJJ, save your $$ and buy a Dave Smith upright hen. Plus the risk of getting shot by some jerk with a strutting tom decoy unless totally private is real.