I will have a solo recital in august around 1,5 hours. I will play henle 7 grade pieces except the liszt 12.rhapsody(henle 9) but I picked these now. What do you think, how hard are they and will it get done till august
I'd caution against using new repertoire with only 2 months of prep time unless you are fairly experienced with performing. Getting the notes learned and (maybe) memorized is the first step, even once your polishing getting consistency in the quality of your performances is quite time consuming.If you have some old rep you can bring back you might want to do that instead, but if you've played significantly more challenging stuff and you think you can bring them up to that consistent level, by all means go for it.
To the first one, yes I will do the exact same thing! I will play the whole bach french suite in C minor, thats not a big challange and I learned 3 movement of it earlier. And then I will play schubert impromptu a flat major op.142, these are good for "warming up your fingers" dont you think?