Wow! I really love this project! Sure hope SuperNSWoman doesn't have as much delay as the actual NS. (Ghehehe..)
As for a printing company.. not sure if you still need it, but you might wanna check fabricondemand.com
I'm printing my Spiderman pattern with fabric on demand as we speak.
They're cheap, fast and have a great customer service. Dye-sub printing is still kinda pricy though. You might wanna save at least 80 euro's for a suit.
Good luck, and feel free to PM me if you need some extra info.