The first time through serves as both a good beginner version and as a way to build up to the more active second time through. The grace notes in measures 25 and 29 aren't as hard as they look. Just play G-B-D rapidly, a little early, so that the D is on the beat. If you find it hard to jump from B to D quickly enough, you can play B-G-D instead.
If you don't have a low F# note, I can make a new score in a higher key, just ask!