how long will it still be profitable do you think because if i never get break even i better hold it with 1 rig
it depend on your electricity, but do not sell your rig, profit is there with new altcoin, it will always be profitable, if you make enough profit you can try to add solar panel to your setup
they are good when the profit is so low that is equal or less than the consumption, in this case they can help you keep your profit per day