I promised I would update here. The sale went without a hitch. Cashed the check on the spot and took the money directly to my bank. Turns out I didn't have to worry about anything from the getgo, but I would still be waiting for the check to go through had I just accepted it to begin with. This way I saved a lot of stress to myself!
"A dog is the only thing on earth that loves you more than you love yourself" - Josh Billings