We get a lot of threads here that are no more than “hey I have no skills, help me make an MMORPG” with this one they seem to have a game idea that while it’s a huge challenge it’s actually possible and they’re taking the right steps to get working on it. They have skills to contribute and they’ve been putting together a game plan to get it working. Really it’s something that can be done as long as people involved are disciplined and dedicated.
I would actually look for a concept artist to help in the early stages though. Help narrow down the look of the game and come up with designs.