If you're eventually going to cover it with drywall or T&G, I wouldn't go to the trouble of adding any additional layers of scrim paper or anything....
Just giving suggestions but there are also different (harder) waxes than carnuba and there are also different qualities and materials of wheels. All...
If the trunions are cast iron, not aluminium, I wouldn't concern myself too much with the weight. You can only put so much on the table at one time,...