I'm not familiar with what you are hoping to do but here's my concern: any time you are doing a project that everyone makes a piece and brings it in, it never goes together easily! Not everyone's 1/4" seam is the same or someone cuts things with a different ruler, etc etc etc. You may find a block that simply isn't going to work. Now do you offend the seamstress by not using her block? The only way I can see this perhaps working is to do paper piecing where every seam is already designated exactly as you hope it to be.
You may be looking at more problems than just getting started! It may follow you all the way to the end.