I have a question regarding a wall assembly. I am in climate zone 6a. My intended wall assembly from outside in is vinyl siding, furring for air path, 3 inches of gps @ r14.1 , 2×4 framing with r15 eco batt, 1 ich r5 gps, proclima intello plus vapor barrier,2×3 service cavity on horizontal and drywall/paint. All this on a frost protected shallow foundation as a unheated structure. I’m looking for any input and advice. I appreciate all input,  thank you.