We aren't as ambitious as I let on in the OP. Our goal is of course to release all of Tamriel, like I said. But, we plan on doing each part little by little, and releasing an update when we get something substantial to release. So we are more than prepared to not release all of Tamriel, but we are going to attempt to do this nonetheless, and if we only do Solstheim, then be that as it may. The beautiful thing about our name is it can always be changed
I really, really believe it would be wise to change your name now. Change your name to reflect that you're working on Solstheim and make sure the public knows that Solstheim is your main goal, but that you may want to move on to other areas when you complete it. When people see that your goal is to recreate Tamriel, they
will roll their eyes and pass you off as yet another over-ambitious mod that's destined to bite the dust. If they only know that Solstheim is your goal, then they'll be much more willing to believe you'll reach it, because unlike Tamriel, Solstheim isn't impossible to do in a reasonable time-frame while still making it a quality mod.
I think you really need to take the time to research Tamriel Rebuilt. They've been working on making mainland Morrowind for close to a decade and while their work is truly amazing, they haven't publicly released more than half of their goal. To be brutally honest, if you really think you can make a team that can rebuild all of Tamriel to the same quality that Tamriel Rebuilt or Bethesda strives for in a reasonable amount of time, I think you need a reality check.