I'd like to move him to 1B if it is conceivable he would be willing to move. Seems like it would be less wear and tear defensively and would extend his bat.
I wish everyone could accept the fact that his true value is his third base defense, stop talking about moving him to first, and accept that in general he isn't going to hit for power. He is a great asset hitting line drives, getting on base, and making plays at third. He just might not be the power asset we thought we had. But if we move him to first, I don't really see that he's much use to us at all.