I'm with the crowd that says keep it and use it as your work vehicle. If you are selling, don't list repairs, list maintained with records available. The alternator / battery stuff is worthless to a buyer. If the headunit has bluetooth, just list it was upgraded to a bluetooth capable head unit. As others have suggested, it's going to scream hacked aftermarket install. Unless you have photos showing a show-quality install of the remote start and head unit, I'd just list them as features, but not go into detail. When I hear about remote start and aftermarket radio, I see twisted wires and black electrical tape holding it all together. Have it detailed and then see if you want to keep it or still want to sell it on.