The main thing to bare in mind that jumps out at me, is to be aware that sometimes tight players become calling stations (loose) postflop, and sometimes loose players become weak-tight (tight) postflop. Just make sure you're not using pre-flop reads to adjust to their postflop play.

Yeah, you can generally apply these concepts at a player level, although this is where the term isolation comes in. Its much easier if we can isolate a single player to play against postflop than see it multiway and try to thread a way through multiple types.