I have to agree on the "why?". These coins have the edge lettering and mintmark on the edge, I intend to likely collect just one set, and probably just the reverse proofs.
I'm not sure if they will make a book to cover the entire sets, you'd have the P+D for 102 coins, then the S proofs, and S reverse proofs. for another 102 coins. counting the introductory coins, and they might do district and territories (I don't know that either way yet but would be an additional 6 of each total of 24 more)
It would be a big, heavy album if they put it all into one I'd think. 228 dollar coins in one book doing the math, that 4 pounds of coins alone. another pound or two for the book and pages....
Probably there will be a P+D album later on and then a proof album.. honestly probably better to just use OGP for the Proofs and Rev Proofs, in my opinion where you can see the edges, and just do an album or two for the P+D coin if you want to collect those since they won't come in capsules or a lens.
If I do just the reverse proofs, it's going to cost me like $570.00 from the mint, if I do the proofs its lie 14 lenses@$20.95
and the intro coin, for close to $300.00
the P+D coins are $32.95 for 25 coins of each design, you could buy them on the secondary market, but still $1.32 each and 114 coins at mint cost about $150.00 for P+D for just one of each,,,, realistically, probably about $2.50-$3.00 each x114 on the secondary market, so $250+ or buying the rolls direct 2 rolls, 4x a year for $32.95 a roll.. ouch.
I mean this is a considerable amount of money and a long time to complete everything of this set. so I decided just to do the one part, and I liked the look of the reverse proof I've seen better than the others. I won't try to talk you out of doing what you want to do, just pointing it out that it's unlikely there are many that will want a single album to house the 4 different types all in one book. the edge lettering being the most obvious reason for not wanting to do them all.