the four biggest factors are the -difficulty increase rate, -electricity cost, - $/TH cost, -Bitcoin price change.
Only one you can control is electrical cost, so if yours is lower than most then you should outlast most. The others you have to take a longterm guess in my view.
Also, those calcs almost always base it on 12.5 BTC when in reality it's been greater than that (14-18 or even 19 BTC if you're really lucky).