I use grapheneos mainly bc I don't want Google on my phone, I don't see many tradeoffs, i don't have Google play store but have others stores or just install the apk. But you can run Google sandboxed and everything will run fine. For my banking app I did that, I created a secondary user profile with Google sandbox and my banking app there, and I switch to that profile when I want to use my banking app, when I'm done I switch back to my main profile.

Lineage is easier to use iny humble opinion