Heya! Your character sounds great! I’d definitely look into WrA Information & Directories - #24 by Vagrul-wyrmrest-accord to see if any guild there catches your attention. I’m not sure if Sunfury Battalion accepts quel’dorei or not but they’re a military blood elf guild.
I can’t think of any others so you may need to look into one of those more race-loose military guilds that are abundant on the server.
Good luck!