Potential Prop Bet or Just for Fun?

This has nothing to do with poker, and it's WAY cooler! My friend and I wanna make some sort of a mini bet that we can find all 50 state license plates on a car in a certain amount of time (maybe 1 month). We can do 1-1 on money with a max bet of like $50 total for everyone (lol). It just sounds really fun AND I have a head start cause I found one of the impossible two already. Alaska. BOOM! Besides these two, the further east the harder to find. Especially when not driving on the freeway.

[x] Alaska
[x] Arkansas
[x] California (had to be found eventually hahahahhaa)
[x] Idaho