Yep, Duncan pup and long neck tenon... good find.
HOWEVER, Id go back and get the right paperwork. People say paperwork doesnt matter, but thats BS and you know it. If the original seller had quoted you the same price but listed that he couldnt provide correct documentation... Would you still have bought it? When you one day try to sell this guitar with incorrect documentation, what do you think that will do to resell value?
I'm pretty cynical, but if somebody were trying to sell me a Slash model with incorrect paperwork, IF I bought it, Id give them less money than with a normal used MIC LP.
Dont think youll never sell. If next year you have a shot at a Gibson Slash burst, with a new baby on the way you probably wont have a ton of cash handy. But if you sold your Epi... you could get it
Youll sell. Just takes proper timing/motivation.