I now use light strings because of slight body bulging at the bridge. I used to use 12' but now use 10's. I have had several sound hole pickups on it. It sounds excellent plugged in. Acoustic sound is good but not real loud.
Heavier strings increase volume.
The action can be easily adjusted by adding or removing shims between the neck and body. The top looks to be one piece and not bookmatched. Still has original low frets and they are not grooved. Finish is bad. It did hold up well for about 20 years but as the guitar ages the wood shrinks.