04 285 magnum value?????????

Thinking about letting her go wanted to get yalls opinion on the value of my rig and what I should ask for it. I bought this bought new from CandO in april of 05 http://www.bassboatcentral.com/smileys/glasses.gif She is a 285 magnum with a 175 hpdi with less than 150 hours and warranty till april or may of next year. It has 70lb minn kota new this spring with all new batteries this spring also. It has two lms 480 lowrance gps/depthfinder units that are linked. Also has keel guard , upgrade on wheels and stainless fenders on the trailer. Its all in good condition and well maintained. I was thinking around 15 to 16 thousand. What do yall think?