What is a 1998 21 foot suntracker signature series party barge with a 1998 40hp force motor tilt and trim and 1998 trailstar trailer worth. It was purchased new as a package,, bimmi top, 28 gal gas tank, and has a 3 year old mooring cover. they are asking 5500.00. It seems in real good condition,we took it for a ride seemed O k to me I think the tack said 4700 rpm maxed out. Thanks for your input in advance...