Why do you want to glass the whole fuselage??? Use heavy weight silkspan and glass only the nose.
John,
I only use 3/4 oz cloth and I assure you it is lighter then silkspan. The polycrylic clear will cover in 2 coats, considerably more dope is needed on paper.
One coat of primer to fill any voids and sanded smooth. Minimum paint on fuselage to get a reasonably shiney finish. It has held up for about 200 flights so far and will probably go a whole bunch more before anything needs to be looked at finish wise.
I do this simply because I really can't stand the whole dope/polish and suffer for your art thing. Guess I'm lazy but I'm a contented flyer.
dennis