Well, I have decided that *if* the mod is not entirely complete by the announced deadline (but still relatively done) I will go ahead and push out a, say, 0.8 Beta version of Episode I, so that people get to play with what is esentially a slightly unpolished version, instead of having to wait. Besides, no mod is perfect when it comes out, so I fully expect bugs to be ironed out in either case.
As for big planets and other visual enhancements, you will get all that sooner than expected. Won't say more at this time. 
Oh yes, the mod will be available for download from multiple locations, I already had a few nice offers from people willing to host it, and of course it will be available via Filefront and through the mod section of this website, if they can handle big downloads. I'll try to package it well, but still, expect a fairly large download in excess of a couple of hundred megabytes.
I will soon activate a special forum just for this mod, courtesy of Slipstream Productions, the guys behind the Dawn of Victory mod, where people will be able to discuss the mod, and later, help iron it out to become hopefully one of the best mods out there for SoaSE! 