It is not an unreasonable price if just the right person sees it, given all the mods cost a small fortune. However, a lot of people don't like other people's mods. Usually, modifications are worth less than 10 cents per dollar spent, and sometimes subtract from the price.
So, good luck. You might have just the right person see it and fall in love with it. In my area, I'm guessing an 05 919 would struggle to break $5000. The love isn't felt in this area for naked bikes.