Hi Propjobbill

I'd be aiming for 8oz maximum, and ideally more like 7 - shouldn't be too hard to achieve with 20"/120 sq.in.

I've just finished a profile fuselage/built-up wing model for a Norvel 061 - about 27.5"span and 150 sq.in. Despite having a fairly hefty wing-mounted landing gear, it still comes in at just under 9 oz. - and I'm no master builder.

Hope this helps

Steve