Be careful with cloud mining, many times it will come back to bite you in the ass. Trying to mine 1 BTC over a month means you're going to have to put in a pretty large investment for very little potential profit.
Buying a TH or two for fun is one thing, but dropping a large amount is something you will most likely regret.
Hashnest is only one I would do right now. Most others are like throwing money out your window you will never see most of it again. And it's hard on cloud mining.
Anymore I have been suggesting get S7 at coupon price, and finding a hosting center. You then own the gear which is huge advantage twords end. It could be a nice little bump in ROI (hopefully ROI at least).