for the problem of seeing through the eyes, you should look at what this guy has done. James Bruton, he is on youtube and has been making an awesome iron man costume for a long time now you should check it out. Anyway, on one of his helmet videos, he has an interesting method of diffusing the LED light across the eye lens and not that I've looked through the eyes myself, but he says he can look through it pretty well. here is the link to the video
XRobots - Iron Man Cosplay Electronic Motorized Helmet VERSION 2, PART 4, Light Up Eyes - YouTube if it doesn't work you can search up "xrobots iron man light up eyes" on youtube and you'll find it. Hope this can help a little