Your fabrics are lovely, and the pattern is lovely. But this happens to all of us at one time or another. You just have to decide if you still want to make it, as is. If not, then look around for another pattern that will fit the fabric requirements you have (if needed, add a few from your stash). Or is the fabric you don't want to use now? In that case, you can get other fabric and make the pattern and save these fabrics for something else.
This is the exact reason I don't make kits. I don't search out fabrics before I'm ready to make a pattern, as the same thing happens to me sometimes. Therefore, I grab the pattern, and if it's going to be awhile, I don't choose fabrics yet. If it's next though, I'll go ahead and grab the fabrics I see and like. What makes it hard is that I LOVE some of the patterns made with the specific fabrics, and in that case, I just have to decide if I will get bored with it or not. Who knows? I certainly don't! :)
I know this is no help...just commiserating with your dilemma :)
Debbie in Austin