I would buy 4 new tires now in the current location. As others have stated, Michelin tires are expensive. You could save $100 or more buying other tires that's not Michelin but descent enough and last as long. Plus you're trying to save $100 but think of all the risk involved for $100! An accident would cause a whole lot more than $100.
Also, in most places if you buy a set of four tires you would get free balancing & rotation for the life of the tires at the place you buy them. So if you buy the Michelin in your hometown, you either have to go there every time you need to rotate / balance (150 Miles travel), or pay for it if you have it done at your current location. So IMO it doesn't seem to add up to worth the initial $100 saving.
Get something like Bridgestone or Kumho and you'd probably pay less than the Michelin - $100 discount. Plus you could probably also find discount at your current location, just call some local tire dealerships and ask, it's hard to believe that only your hometown tire dealearship has some discount like that.
Tire alignment probably cost anywhere between $50-70, and in some places you can buy a package that will give you free alignment for the life of the tires for a bit more, which may be a good investment.
So, IMO, it's really not worth it to wait just for that discount with all the risk involved. What seems like the initial saving of $200 does not worth that much if you figure in all the factors.