Just weighed the the plane in the fiberglass base at this stage of sanding and I am at +2.6 oz - way better than I ever imagined. and after inspection I have just a little more sanding to do. it's not going to be into the 50's (F) until the weekend so. she may just rest until then.
So if I can go into primer at +2.5 oz then I am thinking primer and glaze could add about another 1 1/2 oz - well I would be very happy with that.
I took off a lot of weight sanding the microballons with the 150 grit....