I dont think you understand mining if you just think it's extremely profitable.  You can lose a ton of money mining as prices of bitcoin goes up.  If bitcoin goes up 10% but mining difficulty has gone up 50% (in this case we will pretend you have the same amount of gear and its performing the same throughout), you will be on the losing side.  You would be making more money as price of bitcoin increases by just buying bitcoin and holding it.  Mining profits are more volatile than bitcoin itself.  Now on top of that you would have to trust this company to be fair and honest about their earnings....what I'm getting at is you will be way better off just buying bitcoin gradually