BartK My rule is going to be to aim for 1 week but maybe extend to 2 weeks at most. If the whole piece is too much then I'll do only part of it. There are plenty of A sections that are nice on their own even if I don't play the whole thing.
This sounds like a great plan.
If the piece is too easy then... who am I kidding? There is no such thing! If it's so easy I can almost sight read it perfectly then I'll spend a few days to make it beautiful and count it anyway.
As does this.
My first 40P piece was one of those "too easy pieces" (I wrote about it in the Microjazz thread) but it also didn't grab my interest, so I moved on. Now the second piece is a good bit harder, so I figure it's karmic payback!