I think it's silly that nontrad = older. I'm pretty nontraditional and I'm 21.
Like, for instance, being a high school dropout applying for law school isn't exactly the normal run of things... It's much more traditional to go to law school after some work experience than after leaving school at 16.
I don't presonally think non-trad *has* to equal older. I'm fairly confident that you'd be considered a non-trad; plus you probably have a good, interesting story to tell the adcomms!