No no. More just if you're expecting cream of the crop prices you want a fully turn key and drive home experience. Helps sell faster. That being said, my 1-hdt never cooled like my 1fze. Didn't matter how much money I threw at it in parts! :) my .02
You don't need a 24v unless you have a 24v vehicle. Same goes for winches. Except these are lower amperage so you can convert easily if you want to. If you bought 12v, you did what I would have too.
Was just curious, I'm not super serious by any means. Trying to track pricing and 70 series stuff is the wild West of owner valuations. Lots of people are looking for more than the cost of a brand new LHD rig.
Your math doesn't add up in parts, unless you're including your value for the LC, which most people don't consider parts. And with damage to the door and removed flares that value is probably slightly off anyways.
That being said, your price is probably in the neighborhood.