If you want to check up on Eva info I would say check out http://www.therossman.com/evafaqs.html it has a lot of info on the series. Much more then you'll need. but it could be helpful to make comparisons with the angels and chacrters and such if your worried about it.

Although I wouldn't say many people will get the connection with your comic to Evangelion. Besides as long as it's not a carbon copy, most people won't even care (at least they didn't when my early comics were near identical to 8 Bit Theater)