Personally, I often find technique overrated as the musical demands are more taxing. Technique cam 90% of the time be worked out with practice in a healthy manner (assuming you've reached the technical capabilities of your current repertoire).
I've played Ballade 3, Alborada, and Ballade 1 in that order but not consecutively. Admittedly, alborada took a bit of work to get comfortable with the repeated notes, but the 1st ballade I dont think was a huge jump technically from the 3rd ballade