A 20 gauge Model 21 with 30" barrels is 1 of about 175. I own a Tournament grade 20 gauge with 28" Skeet barrels and 30" magnums.
A great set and pretty rare to boot. With only about 30,000 in all a refinished Model 21 is not as frowned upon as say a Parker would be.
Too bad about the wood but a $3000 bill will remedy your stock situation.
There's plenty of market out there for your most desirable 2 barrel set, in fact I know a guy...