I don't see any mention of calculations around difficulty changes?
I did not incorporate the bitcoin difficulty change, the only way I believe this can be done is to update my business plan everytime the difficulty changes, which I monitor constantly.
That's probably a good idea. It might also be a good idea to set up some sort of SMS alert system so you don't get surprised if the difficulty changes while you're sleeping. How often do you think you'll need to update your business plan?
Well thank you, and I believe that it would be quite foolish to change it everyday, but once or twice a week is what I will aim to do, this way, I'm keeping everyone up to date as well as myself, thanks for the advice though.
That was actually heavy sarcasm. You should understand difficulty changes before you invest money in bitcoin.