Airtight drywall in CZ 3A/4A – GreenBuildingAdvisor

I’m confused about whether or not to make the interior drywall airtight, thus acting as an interior air barrier. Here’s our current setup:

Hardie

Benjamin Obdyke Slicker MAX rainscreen

Tyvek commerical wrap

OSB, taped seams

2×4 stud wall

rockwool insulation

drywall

I’m in the N GA area, so we have hot & humid summers and can have relatively cold winters. I’m confused about whether or not making the drywall airtight is a good idea in my CZ. We have the taped OSB seams, so we have an exterior air barrier. Do we also need one indoors?