I just got through setting up my storage area and I used the same Elfa shelving as Alex did, but just went with a finer mesh. I would not go with a basket larger than 2 runs high. The basket will get too heavy and bow out in the bottom from the weight of the fabric. I used 1 run high with a plastic sheet insert for my threads. I am very happy with mine. Didn't stack mine quite as nicely (folding wise) as she did, but it's still organized and easy to use.
The Container Store is where I went. Order some of it online and some at the local store. They are a big help. Also, they usually put their Elfa stuff up on sale around the beginning of the year. January or February.
Have fun.
Clara