Well, the wing is designed for a -3g flight load, ...............aerobatic gross weight was 1550 lb, ........able to support 4650 lb if it is properly distributed. The short-wing RVs had a 110 sq. ft gross wing area............wing area for the snow is 100 sq. ft. It should be able to support about 45 lb/sq. ft of snow.
Liquid ... water density ... 62.4 lb/ft^3, ... about 8.5 inches of water ... 45 lb/sq. ft. Fresh snow ... density ... 10% of water, so we are good for about 7 feet of light, fresh snow, but .......settle to about 30% the density ...... for 45 lb/sq. ft. But, if it rains, density would go way up, ... loads would increase greatly.