ALsoHuuu... No thank you, the style and tone of Minecraft dosen't match MGE at all, it would be really ackward I think.
I know how to dev in Java, but I never did a mod for Minecraft, but you already have your team so there isn't anything I can really help with more than they already do.
Also if you are leading the project, isn't your role simply to say what's to do, the limit, the thing you will need to do, make sure that you are all on the same page?
For example, will it have new biome? Wich one? What mob to add? What item to add? etc...
Once you have all those info write a reference sheet on google drive that everyone can acess, that will serve on reference on what to do for the project. (I suppose, I really don't know how you guys planned that)