I'm doing a medium ship build as well, currently sitting at 2132 decks, so I'll try and give a bit of insight.

If you're going for efficiency, you may want to dump the forcevoiders, utricles and BM50's. You can swap the phase engines and BM50's around during base battles. I'd try to get Kalviums and at some point Aegis' in place of those so-so defense mods. Mind controllers and bane emitters are also not very space efficient. Composite rays and if you had the chance to get them, Zebeeren's cannon's are much more space efficient. With composite rays, you can also get the minimum scan for troop carriers and such without buffing or having to swap mods around. Triaxials also aren't too great, but I'm not too sure what to put there instead. Maybe upgrade to synco and/or put an autoevasion node in. You could also replace them with Gemini cannons when you get them, or assembly bots if you play around with some other mods. Just throwing a few options out there.

You're looking great, good luck going forward