Of course, a group shower has to come next, and everybody has to be comfortable with being washed, touched, and, squeezed by everybody else, goddammit!
Yes to that! Add in a Costco-size jar of coconut oil, with everybody rubbing it all over each other, then frotting, hugging, more frotting, fondling, even more frotting, all with the 4 guys in the positions you described, and each with his head in the joint laps of 2 topless, busty, bisexual girls who are making out with each other. That's 4 guys + 8 girls + coconut oil. Next comes the girls in twos performing double fellatio on the guys and then the guys perform DAP on the girls while the girls lie side by side, holding hands, and lesbian kissing each other.