I started collecting fabric so if I wanted to start a project at 10:00 at night I would have fabric on hand to work with. Just before I retired I found a wonderful sale where I bought a bunch of fabric in the same genre (does that word apply to fabric?). I purchased 85 yards for less than $200.00. A couple months later I purchased another 20 yards of neutrals that would work with that fabric. I'm still working on that fabric and will be for a long, long time. My advice would be to purchase fabric in the same style, color, etc to make a couple quilts. The rest of your stash will build itself when you have leftovers from each quilt that you make. Sometimes too large a stash can be as crippling as too small a stash.