What is a good weight to shoot for? I am building a Electric powered Stunter. It will have a 3300 4 cell battery, 70 amp ECS, 35-36 motor. All the electric components alone weight a pound!  what is the average wieght with the wing span of 52" wing area guestamated at 500 sq inches, full fusalage, foam wing sinked with 1/16" balsa and .5 oz fiberglassed.

Wing loading of 12-13oz per square foot is acceptable.

What is a good weight to shoot for? I am building a Electric powered Stunter. It will have a 3300 4 cell battery, 70 amp ECS, 35-36 motor. All the electric components alone weight a pound!  what is the average wieght with the wing span of 52" wing area guestamated at 500 sq inches, full fusalage, foam wing sinked with 1/16" balsa and .5 oz fiberglassed.

Not sure what motor you are proposing.  I find 16oz a pretty light setup but that is not my point.  Pay attention to what Dave Rigotti said.  Acceptable wing loading is in the 11-13 oz range.  15 can be trimmed to fly well if you have a good motor.  What you are targeting is closer to 17-18.  When I build my target weight is always 13oz @ sqft.  Is there any way can lighten the load?  When that size plane was the "state of the art", they weighed in around 28-35 oz dry, certainly under 40.  I know it is probably too late to do much but if it is not finished - think light!

I flew an enlarged (510 vs 490 sq") Sig Twister for practice for a couple of years.  It weighed 52 oz WITH a 2800 4s battery and a Cobra 2820/12 motor.  That is a wing loading of 15 and it flew like it was heavy, but it did fly well.   

Ken