I will agree with many replies above. First, congrats, you’ve reached ROI and covered your investments. I hope, you’ve also had some income cashed out. Now, even with the electricity costs, cryptocurrency fluctuations and the world not being able to predict the coin prices, you can still keep mining and have a good return. Keep mining ETH with the majority of your rigs, but also look around and change the algos for some of your rigs to mine some new coins, which might (or might not) have a bit speedier potential. Good luck!