one other approach
Keep all the moisture outside.
Wall construction - from inside to out
2x6 stud wall
sheathing (I like the hurriquake nails)
peel and stick roofing membrane (instead of house wrap)
2" thick polyiso foam (in 4x8 sheets) gives R12.9 continuous
3/4" PT plywood strips screwed through foam and sheathing into studs for drainage plane - requires 4" SS screws.
siding - hardiplank or whatever. applied with SS screws to the PT plywood.
The peel and stick roofing membrane is self healing and will keep all exterior moisture outside. The inside stays at room temperature / humidity. The wall dries from the peel and stick roofing membrane out.
Since your house is on piers, the polyiso foam should never be subject to termites. If there is a possibility, look into Termidor.
Ray Moore, a builder in Austin Texas uses this approach for air-tight houses with VERY low AC bills.