[JosephC]

Due to the top of the inside of the pyramid being 24" x 24" I don't think it's very possible to get 2 robots in the 30 point level on the inside unless they are extremely small.

It is completely feasible to drop a line to have them come up the inside to the second scoring level, using a piece of lexan sticking out to hit each bar as the ascended.

As for the 84" rule, you would take the maximum required to get them to level 3; 90" and subtract their robot height from it. As long as they are 7+" tall you wouldn't break any rules.