I started scrappy quilting this summer and my first was just 2 inch squares, random colors and order and it came out much better than I expected. It's not an impressive quilt, but I feel I can use it as a utility quilt. It is riding around in my car for emergencies, cold days at an outdoor event or heaven forbid, stalled in a snow storm.
My other scrappy quilts were more planned but not much more. I guess I need to post some photos but.....I haven't taken any of them yet. (Four tops finished but not quilted)
I have seen some exquisite scrappy quilts on this site. You just would never have guessed that they were made from the odds and ends of other work.
Bottom line, as we often hear on this site... "It is your quilt, do what pleases YOU." Have fun with your planning and I look forward to seeing your efforts some time soon.