The usual reason for a bounce or a baloon is landing too fast.
It doesn't really matter whether you fly the final at 300kt
but the speed during the flare is really important. Work hard to get that speed nailed. It it's meant to be 70kt then make it 70kt, not 80.
Two things really matter with landings: flying down the runway centreline, and touching down at the right speed. Work hard on those two and life is a lot easier. Get one or both wrong and everything is a mess.
The stall warner should just come on at or immediately before touchdown.
The rest is type specific.
The angle of descent is not really an issue. I can do the same landing with a 3 deg slope or a 6 deg slope. If the speed is right during the flare, it will touch down and stay down.
Settings things up early on saves workload later on. So, fly downwind at the right speed. Fly base at the right speed. Fly the final (with landing flap) at the right speed.