Congrats on your incoming speakers! I just dropped a pair of AN/Jlx's into my system a few weeks ago. That's a great stable of amps you have and any one of them would probably be a nice match with your new E's. Don't get to hung up on having an all AN system any well designed tube amp will make your E's sing. I am driving my J's with PP EL34 stereo amp putting out 17 wpc in class A triode mode and they sound great together. Your Herron preamp and phono are very neutral sounding and should work just fine. Try experimenting with your various amps and see what combo sounds best to you.
My amp and preamp are both custom pieces made my Deja Vu Audio they are the AN dealer where I bought my speakers. One way to maybe bump up the level of synergy is with cables, I did pick up a pair of AN Lexus speaker cables, that's the same wire that's used in my J's internally. So perhaps look into trying a set of AN SPE speaker cables? The best advice I can give you really is once you get the speakers run them with the gear you already have and just get used to the sound. That will give you a better jumping off point for further changes. Good luck!