Well, I've already stated that I'm an interested buyer (I'm definitely going buy another 240 before May), but after following the saga of everything you've gone through, I have to agree that you should hang on to it after all of the blood, sweat, tears and frustration. Man, you are so close to having that puppy dialed-in. You've put too much into it to walk away now. I know I'd have a hard time selling. ...and the timing of the tax return is perfect.
Now, having said that, I'm still interested if you make up your mind to cut it loose...