Approaching The Monster - T206

[KMayUSA6060]

As I breakdown my collection and the goals I have for it, I'm looking at starting the chase of The Monster - 520 T206 set. I'm looking for some input on my approach.

Acquisition Strategy
Target 50+/- cards per year, for 10 years. Create a spreadsheet with estimated expenses per card, and of the 50 cards per year, acquire about 37-38 commons, and 13-12 uncommons/HoFers/important cards. Thoughts?

Grade
Not too concerned about corners. I'm more focused on the surface. 1-2 will work for the commons. SGC 1-3 for the important cards/HoFers, as long as the 1 is under-graded. Sound about right for a budget?

Backs
I don't think the backs are too important to me. I'm just going to target the best price I can find for each card. For those of you who have attempted/completed this set, would you recommend targeting a certain back, or does completing this set with a budget negate the importance of the backs?

Storage
Breaking it down, I want to put the commons in a binder, and the uncommons/important/HoFers in slabs. Thoughts?

Marketplace
Where is the best, most trustworthy place to buy raw T206?


Are there any other factors I'm overlooking? Thank you in advance for any and all advice.