I have not done anything with the recording merging process yet, but intend to. I don't expect it will be straight forward, so to use time properly, why not learn lots of notes so here goes.
Famous last words, this movement doesn't intimidate me very much. Reasonable volume of notes to learn, and it doesn't appear like there's a great deal of problem solving. So, the objective is to learn it as quickly as possible to improve my method. Everything can always be improved.
Not many themes repeat, only two from what i see (pianistically), which is a favorable. The opening piano entry does look to draw my attention. The glissandi passage is made of many repeated patterns, for example the black key glissandi are only on a single chord each time. The big sequential passage immediately after that is where i will begin along with the opening and go from there today. I have not recently been learning many notes so my mind is likely open to the process.
This is balanced with other repertoire: Liszt/Schubert Gretchen (which i will be performing on saturday), Chopin 3rd scherzo (probably be recording it along with the Liszt early next week), Chopin 1st Scherzo (all 3 page of it, barely a task to learn it at all. Weekend project at best. Playing it properly is a different story). I should learn the 4th Scherzo, but it doesn't speak to me on a personal level. Some Rachmaninov should be done too, all finished before May, I intend to start the 3rd Scriabin Sonata then. And at the same time the Ballades starting with the 1st.
However long this movement takes we will see, the 2nd movement will be next.