I really don’t have any experience with the pieces you’ve mentioned that you’re interested in. Vincent makes some nice gear in that price range. They are class A up to the first 10 watts and have tubes in the preamp stage. Mine didn’t run hot. You would have to go pre-owned to get one of their top models. I’m not sure why you’re concerned about something being "too powerful". I have run highly efficient speakers with big amps and most will respond well to the power.
If I were currently looking I would also consider Modwright’s integrated. You’d have to increase your budget a little for a pre-owned one. There’s currently one listed on CL in Seattle for $2500.