My wife has a consulting business so we frequently load stuff in our toad to offset weight, same idea but you have the toad on arrival. As long as you are within weight limits, gross vehicle, gross combined and on axels and tires and hitch shift the load whatever way makes since. In your case a trailer sounds like a wise thing to do with so many people.
PS: Don't forget to consider the traveling weight of the people, they count.
I do all my own stunts
03 Dolphin LX 6355, Workhorse W22, 8.1 vortec, 04 CR-V, Blue Ox, Brake Pro----Norm, Barb and
Doc(He's a PhD)