I went to the Pool Calculator website, entered my numbers in. Seems like if I have pH at 7.2, I'm over the threshold of safety (not making any adjustments). Seems clear that just adding some extra calcium would be a good idea here:

pH = 7.2
TA = 80
CH = 250
CYA = 50
Salt = 3300
Borate = 0
Temp = 80
CSI = -0.68

pH = 7.3
TA = 80
CH = 250
CYA = 50
Salt = 3300
Borate = 0
Temp = 80
CSI = -0.58

That said, my pH spends most of its time above 7.2 or 7.3 -- more like 7.6 or 7.7. So in that case, I wouldn't need to do anything:

pH = 7.6
TA = 80
CH = 250
CYA = 50
Salt = 3300
Borate = 0
Temp = 80
CSI = -0.3

Maybe if I just go easy on the acid addition -- something you suggested doing anyway -- I'd be okay here.