This Friday nite is 1 of approximately 20 occurrences in a century, when the optimum time to consume the Seudas Beris shall be Friday nite dinner = Leil Shabbos Seudas Rishonos; i.e. If a Beris occurs this Friday be it Bizemano or be it delayed, there is no consumption in the morning in light of Assoro b’Teves, so all the guests would have to return to 6you on Friday nite for the seudo after the Tzom is terminated.
As for how all your long distance guests would travel in, I cannot solve this issue for you crazybrit. At least it shall be a timely venue for serving meaty.