I built one about 5 years ago. Covered with Sig Koverall and painted with latex. The wing builds very rigid. I don't see any benefit to sheeting it, but, it's your choice.

When you get to the fuselage, note that the outer sheeting is pretty far from the inner box structure at a few locations. You might consider adding a few internal formers to better support the sheeting there. I think the internal former supports are a little too distantly spaced.