No no please DO NOT CUT it up into fat quarters !
Most quilters much prefer to buy yardage. You could do some coord. groups of 1 yd bundles like they sell at the shows, or 1 & 2 yd cuts and 3-4-5 yds for backings if you can. You can always cut those smaller if they don't sell and THEN into fats if they don't move -
Check with your local quilt guilds or church guilds, put an ad on Craigs list, Greensheet, local papers etc
Our quilt guild held several sales for those "retiring" from quilting, or from an estate. They were very successful !!