Yeah so I basically do it for all the reasons you described, it makes for a bit less trimming in the end and a bit bigger buds. I also do it to keep humidity down and get better air flow up through the canopy.
I’ll start by picking thickest and/or best branches to clone. Then I start taking everything up to about 50%. No real ryme to this part, just up to where I think light won’t reach well. Then I take all the large leaves off with longest stems up to the top 3. I leave those to collect light everything else goes for airflow and light penetration. I do this right at flip and week 3 usually. Sometimes every week if they are growing real well.