One thing to check for your health and family: Radon

Since you've now got a pit, you also have the prime location for a mitigation system. At a minimum, you can get a Radon test kit at the hardware store (I know Menards carries these) for about $20 that has a sticky card that you mail away for analysis after a set time.

Since you've got an open outlet you should consider putting a dehumidifier next to it with a drain that empties into the sump.

That must have been a royal pain in the ass digging in a confined space like that. Good job.

Awesome effort!

Thats a big slope

Amazing! The flex coupling is smart af, it's so much easier when you want to take the pump out.

I've been slowly optimizing my set up. My next step is to create an interconnect to allow both pumps to discharge to one line (currently three pumps, two lines) so that I have redundancy should one of the lines freeze or clog. I have issues with iron ochre, so clogging is an issue for me. Hopefully freezing isn't but who knows lol.

That's a half-life 2 corner with a medkit in a box behind that pipe

Gratz! No one wants a wet basement.

A lazy/cheap thing you can do to stabalize the soil is mix in some part concrete with the dirt, tamp down hard, and water. Not fully concrete but will prevent errosion and shifting quite a bit.