When I began I bought for quilts that I wanted . I have a stash now because Iwant to do scrappies. One thing Ilove to do is to buy the rolled up remnants ..any size they ar 50%off. I really dont think of the size of them. One month I would search for only one color til I had enough for some order in the scrappy. then on to another color. 40 years later voila..a colorful stash.
you will get there sooner than you think. have fun.