I personally think start with an efficient speaker. This gives you much more flexibility with amps at least.
Volti, Fleetwood are a couple good examples. Used is rare. Both are made in USA. Others DeVore, Charney are excellent as well. These all in your range, new. I have seen some DeVore used, not often.
These would sound great with a 3 watt tube amp. Luxman, Pass, Ayre, sugden all make nice solid state amps. You would not have to search around for 200W plus amps. Not saying those systems wouldn’t sound Have fun.