It's hard to describe the difficulty of multimovement works. I read through it once but it was over 20 years ago. There is one movement that is very fast, hence challenging at full tempo... The first step is to download the score from IMSLP and look at it. If you have at least 5 years of piano, you should be able to assess the difficulty (for yourself). You can also watch a live performance on YT and gauge the difficulty that way.