Climate zone 5 wall assembly

Hi all,
Just wanting to toss a proposed wall assembly out there and see if the experts would change anything.
Remodeling a 1961 home in Syracuse, NY. Wall cavities are 2×4 on 16” centers.
Proposed assembly from inside to out would be…
5/8” Sheetrock primed and painted
Rockwool R-15 between studs
1×6 tongue and groove sheathing
1.5-2.5” CC SPF (more is always better?)
3/4” rainscreen
LP Lap siding
Reading mixed things about vapor retarder requirements on the interior. I would like to omit if possible.
Second question…if I wait to install the exterior insulation for a year after completing the interior am I going to have a mess on my hands?
thanks!
Matt
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