Your "outfit" seems very correct.
"natural fibers" mean we don't want a rayon shirt with a Raiders jacket, nylon sweats and polyprop ski socks. So jeans, tee shirt with a cotton/wool or flannel shirt, cotton socks. will do the job.
Don't worry about cold. Temp will be in the 70s, and your adrenalin will be pumping so a little chill from your open window won't be noticed.
See you there.
Paul Blankenship AROSC
76 Alfetta GT -Track and daily driver; 88 Milano - a continuing project