We all bite off more than we can chew occasionally. My second quilt top has so many little triangles in it, it sits nicely in a box waiting for me to get good enough to finish. I wish I had waited and learned a couple of new ways to do it, like paper piecing, that would have made it easy.
In the mean time, I have gone on to other quilt tops, some pretty complex and been successful at it. So far, a triple irish chain in queen size is my most ambitious quilt done, a patten called "homeward bound" the most ambitious top complete. It just takes time and patience.
Best of luck. this group of people will get you through.
tim in san jose