Sounds pretty cool, thanks for the details! Any chance of some pictures? My worry would be the same, I don’t know if I trust myself not to flood the house lol
I did think about using a mechanical float like in the back of a toilet, and an overflow drain in case it never stops filling
What’re you wanting to use it for, what are your main concerns?
I’d recommend searxng, but mostly because I don’t have experience with very many others. I’ve never had any issues with it either.
Check out a public instance if the engines you’re interested in and see which you like more?