Eddie, I began the same way. I bought a sporran and a balmoral bonnet first, and I wore the bonnet whle awaiting the arrival of my kilt. I even wore the sporran once in a while since it served admirably in keeping all my stuff at hand. (Some nature-chick/wiccan/something stopped me and asked if it was my medicine bag one time, and I kind of put it away after that.)

It's not a bad idea to be assembling the accoutrements of the outfit while waiting for your kilt. Those "little" puchases add up, but if you spread 'em out, they aren't so bad.