Please let me know if this sounds correct-
Sub panel fed from 80amp breaker in main building 200amp load center. Roughly 75' of 1" PVC conduit from existing load panel, under existing timber deck, underground for ~6', stub up outside building, wall penetration to interior main lug load center with 6 branch circuits (1 240V outlet, 4 120V outlets/lighting)
1" PVC Sch 40 Conduit fill- 3x #4 THHN (Hot, Hot, Neutral) 1x #8 THHN (Ground, bonded to main structure load panel ground and ground rod at outbuilding)
Neutral and ground to be isolated in all new wiring.
Thanks for any comments!