Thanks, but too much information spread in different topics. Maybe would be useful if a good soul create only one ‘best practices’ topic as it seems to be a question for a lot of people…
More seriously, tho’… I think the correct answer is that you’ll need to adjust all of them at some point. The sound you want will come from various elements in the signal path: source+sample (which have their own dynamics), filter, amp envelope, distortion, track level (contribution to the buss sum), compressor. The VOL/LEV at each stage feeds the next stage. Each stage will have some effect on overall level, tone and dynamics, so you might need to cut/boost some level at each stage, to get the sound you want.
You kinda want to aim at getting the same level out from each stage going into the next, but this isn’t a strict rule. Sometimes the distortion will sound better if you give it a hot signal and low drive/ain, sometimes it’ll be better the other way.
The AR editor pages don’t have meters, so you have to use your ears. Compare the sound with others in your mix. If it’s too loud, it’s too loud. If it’s crunching, does it fit your production? Etc.