How do you buy your batting? How will you store it? I buy mine by the roll, so I had hubby make me a giant papertowel holder style thing for my closet to hold the batting. Lots of outlets, lights, table space to spread out on (nothing worse that moving things over and over because you don't have enough room), large ironing surface, lots of drawers for storage, peg board, entertainment center (TV and/or radio).
Can anything your planning do double duty? For example, my fabric is all stored in wardrobes that I bought at True Value Hardware. My hubby covered the doors with homosote board and batting to make my design wall. I have a huge design wall without taking up extra wall space just for the design wall.