If you get yourself a MACO/OMEGA (Mk-XI) ground set and make that as your active costume it overides the Iron Man outfit and has a decent appearence.
If I did that, I would have first find and get these MACO sets, and it still wouldn't be my uniforms (First Contact basically, with the ds9 admiral belt coloured to match their undershirt division colour. Except Captain. Who gets a black belt). The disable visual is the best bet.
What does the Aegis set look like? I keep hearing that setup getting thrown around, but I've never actually seen it. And where do you get these borgified kits and visuals from that I keep seeing flying around on other hsips?