I dont know what your dosing histroy looks like so its hard to say how much you should use, but as for structure, I would structure it like this :
1-12
prop 400-800mg EW
3-12
Tren ace 200-400mg EW
5-12
Mast 400-700mg EW
10-12
halo 20mg ED
I would run your prov as long as you can, into the end of the cycle taking 50-100mg ED