there is no reason to solo mine tbh... It's just Coal which has to be burned to produce the electricity in the end..
Sell the miner and buy several lotto tickets from the money. The Odds wining something reasonable there are higher...
I see reason in it. For one, it's a fun project. Two, there is a chance, no matter how small. There's also that accomplishment that would feel awesome in the end. How many people can say they mined a block solo at this difficulty? (Besides those warehouses full of miners, they don't count haha)