As you will get more if you sell the seat seperately and then the bike. (And I am sure there is someone here that would buy the seat for a good price )
All those extras usually don't mean alot to a buyer, from what it sounds like , you should be asking around $4,000 for it. Not sure what bikes are going for up in NY, but a five year old 750 with low miles like yours would sell for around that here.
Photos would be good, especialy ones of the "minor damage"