Safe Way To Transport LPs

If packed tightly in boxes the heat won't be a problem.  For generations records have been shipped worldwide in every climate imaginable without problems.  The only other precaution I would recommend is that you let them acclimate to the new house before playing.

Michigan will miss you.

I'm glad to see you're using a big name mover.  Things can go wrong, but they tend to keep them to a minimum.  Ask if your stuff will be reloaded along the way?  Also asked about GPS real time tracking.

Yep, not born here, but I'm a Michigander.