Hi there. This clone you are having an attemt on, seems fairly intressting to me Would help out if i can.. My first tought would be to try some "Cheescake Graham Crust" in the mix, and se how well that would turn out. Other than this i am not sure about the apple part you are looking for, as i have not tried the cutwood version you are talking about. That beeing said, i know i like a few apple aromas out there. You could have a look at them, if you are not finished with this clone.
Fuji Apple (Cant remember the producer of this aroma), ApplePie (From Flavor Art), and Apple Pie (From TFA/TPA)