Personally if there was an opportunity for a freaky Friday situation and I could switch lives with Musk, I would turn that down in a heart beat.
He's rich, and did contribute to some impressive things in the past (he did not accomplish them himself), but that's really all he has going for him.
He's not a good person, most people dislike him, I don't find him to be very intelligent in a lot of areas, his wife left him, all he has is money. I don't think it would be a very good trade.