A jump ahead in your plan, but.....
If you plan to also try and get one light from each state and you're thinking of doing Great Lakes you might want to start looking for Michigan City, IN (HL123) and Split Rock, MN (HL124 for the LE or HL412 for the GLOW). Both are the only light for these states. Think you probably can still find both LEs with a little luck. Michigan City was one of my very first purchases (live in Indiana) and I bought an LE Split Rock couple months ago.

Good Luck.

Dave