Most hex enchant decks Ive seen run few creatures that cost little to get out and then just all in on the one creature and keep attacking, if thats the strategy you want then I would drop the reaper because at that point you want to be putting enchants on one of your other creatures. I would also try to pick up cheaper enchants like ordeal of erebos the more lower casting cost enchants the more you can pile on. (T1 Scout T2 enchant T3 enchant t4 two enchants etc) Also try getting a couple of abrupt decays to clear the field in the early turns to get through. With this kind of fast deck I wouldnt run anything over 3 mana and I'd try to cut down on the 3 CMC cards as much as possible. This will also help with your mana base since you wont need to much fixing and might be able to avoid dual lands like you want to.
Good luck, Hope this helps.
Scott-
Edit: elpablo beat me to the punch, my post above is if your insistant on keeping it BG