You look good.
5'11" seems to me to be about the shortest height to most readily hold up the SWK. Shorter folk may want to consider making the kilt a couple of inches shorter. I'm 6' 0" and the length rides a bit high waist for me to get the kilt bottom to the knee top.
Go, have fun, don't work at, make it fun! Kilt them, for they know not, what they wear. Where am I now?