For referrence, is this cloud mining profitable or not? How many ghs will I need to actually get profit from this? I want to try this but as I he a bad experience with cloud minings I am really having second thoughts.
You will have profit from any amount of GHS - after your hashes will pay for themselves (ROI time).
The level of profit will depend on the initial investment
To get reasonable amount of BTCs per day you probably need smth like 50 THs of S7