I agree with your assumptions.

With a preflop raise of $2, you're not making set mining worth it for them. The general guide for set mining is you need to win 15-20x what you paid to make money in the long run, and at least 10x to break even. So you're right about that.

I would also only really expect to see JJ+ here, which they might be a little passive with.

Also, was A5 SOOTED?