A.J.,
That's a really sweet poster...I like it a lot!
As far as a reminder for myself...I'm addicted, so I don't necessarily keep any sort of visual to get me going. I'm consistently online, here on Net54, so I see cards that keep the flame going at all times
However, I did buy a T206 poster last year that I had planned on framing, but haven't got around to it yet. I believe I want to do something similar to what you're doing with the Cracker Jack poster and mark the ones I need (good idea).
Good luck on completing that set...it's a beauty