Are you sure? I mean, I can understand leaving most tech for the last step, but the system of FTL travel used could have an enormous impact on the entire dynamic of the world; the most obvious being if fast interstellar space travel is limited to certain systems by a network of gates or somesuch. As I understand it so far this is somewhat of a space opera-ish setting so deciding on a system of intestellar travel is doubly important.
Just my opinion, is all. It just seems like something we might want to get out of the way now.