Congrats on your efforts -- what a magnificent piece this is!
Yes, I believe that fingering is 80% of this piece, and stamina the rest (assuming of course that you play the right notes and memorize as quickly as possible so you don't have to think). As the other posts have said, it so much depends on your hands, which fingers are weakest, etc. I found the Mikuli edition finger pretty good, and learned it that way many years ago, but never performed it. Now I'm relearning it (seriously intending to perform this time) and find that fingering is still OK, but the Scholz download on this site is not bad either. I like to give RH finger 5 a rest whenever I can, especially since it tends to get worn out from so much hammering in this piece. Measures 9-11 (and similar passages) are a good example where you can avoid using 5 at all! 4, while typically not a very coordinated or independent finger (for me at least), is stronger for the top notes anyway.
Dynamic contrasts will also help make the piece more interesting and also preserve some energy. Very few "p" markings in the score, but I think the major key sections lend themselves to some rubato and gentler touch, as if the "wind" let up for a bit.
The LH is obviously much easier than the RH, but nontrivial, especially since we probably are so occupied with the RH. If you have good octaves, then there are some places where (admittedly I cheat) I make the LH triplets all octaves rather than one octave and two hard-to-hit single notes in measures 17-18 and other passages like it. (I wish all scores came with measure numbers to make it easier to talk like this -- most don't unfortunately).
Best wishes to you!