I thought about raising here because his betsize is so small that I'll be having trouble getting stacks in later if I just flat. However his lead appears weak and I have the board crushed, so I wasn't sure. Maybe just make it 3x so he can still call with all of his weak draws?

This one should be fairly std I assume.

Here I also wasn't sure about my optimal betsize. I think shoving for more than 2x pot might narrow his calling range by too much so I went with a slight overbet figuring most of his strong 1pair flushes will still be inelastic to this. I'm not sure if a std pot bet isn't better though.