Where are you located, someone on this forum may be close, and interested in the set ??...........
We're in Melbourne, Florida (he's just west of the Eau Gallie causeway)....and anyone on this forum is more than welcome to send me a pm if they're interested :)
He watches Pawn Stars and American Pickers all the time so he might try to get you to buy a teapot or a pallet of roofing shingles with the deal :D
We're both lazy musicians, so don't worry about us trying too hard to complete the set. He has lots of musician friends and does alot of guitar buying/selling/trading so all he'd have to do is put out the word what he's looking for and someone may know a guy that knows a guy. I could help him do a few quick ebay & amazon searches for the hoop & snare and if nothing shows up, then we would list it exactly the way you said.
By the way, is there a vintagetrumpetforum.com?
I have a nice Bach Stradivarius trumpet (Elkhart Model 37) that I played in high school (early 70's). I'd love to find out what it's worth and maybe try to sell it. The bell had some damage and was repaired but everything else has been kept well oiled and shined.