Is there any real collector interest in this set?
Yes, but not nearly as much as ASEs, Morgan dollars
, Lincoln Cents, etc. Medals have always been a niche collecting area - enjoyed by those that partake, but often bypassed by mainstream collectors.
For the price of ten of these I would rather have a roll of mixed date ASE's or a stack of 90%
With this statement, I believe you've answered your question regarding how to proceed. You have stronger interests elsewhere, so it might be time to pursue those other collecting avenues vs. continuing on with a set that doesn't excite you.
(PS: I don't believe the silver Presidential Medals are ever going to be a "hot" item within US Numismatics to the extent that their marketplace price explodes. They may go through periods of increased interest, but most collectors prefer coins vs. medals and this will always hold them back. IMO.)