m1469, I have some things to say. First, I'm going to quote you back to yourself.
"the MOST I possibly can"
"from EVERY SINGLE PIECE I play"
"MOST efficiently"
"smoothEST ways possible"
Okay? You would not let anyone else get away with that. I admire, as does everyone, your passion, intelligence, talent and pluck. You already have the determination, you already have the techniques or the ability to learn them, and you already have this music inside you. So, --I hope it's okay that I'm saying all this! (too late now)-- I don't think you have to force this to happen. It will happen. I also don't think that it is possible to pursue your dreams (repertoire or otherwise) in a mistake-proof fashion. It is good to have a plan, I think almost everyone should have a plan. But there is no perfect plan. There isn't. You would have to do the thing first, make a plan afterward based on the wisdom and insight you gained from doing it, then go back in time and redo the whole thing with that plan.
You don't need to strive for maximum efficiency. I wouldn't say that to everybody! But I believe you are ready to go deep. Am I right? You are on an exploration. The first Europeans to go to Iceland (on purpose) didn't say, "I'll be back in exactly six months." I mean, I wasn't there, maybe they did! but we can see from such events that if they did say that, it still didn't happen. They weren't trying to win a race, they were LOOKING for something. You are looking for something. Something that takes time and grace to find. I think you have to give yourself time and allow for that grace-- you can't plan for it.
I respectfully suggest the following short-term plan first, which I think will jump-start your long-term plan:
Do make the excellent lists and divisions suggested by others, because those will be really useful very soon (I plan to use them myself). Meanwhile, look through every work that you're interested in and write down five movements or short pieces-- all from different works-- that you feel you TOTALLY relate to right now, whether they seem easy, unplayably difficult, or somewhere in between. Learn just the opening sections of those in the next week. Don't spend time on the choosing--you already know what speaks to you, don't analyse them first, don't listen to twelve recordings first. Just sit at the piano, play them and learn them. Memorize if you can, but more important to be really at ease. After that (or during), you'll have urges to work more on certain pieces. So go ahead with those. When that gets rolling, then take another look at your big plan and see if it hasn't given itself a little more shape already. In fact, maybe make a latte date with yourself every two weeks and look it over, see how you want to sculpt it more and more.
Why? I suspect that the pressure of building your comprehensive plan (which is a really good idea, but I'll finish my thought) can make actual playing a little daunting. So forgive me if that's not the case, but if it is, then best to make some personal contact with the music you love as soon as possible. And the music itself will show you what to do next.