I'm going in.

This time, he managed to send a text to the whole party.

Didn't seem that anyone else was going to take point so it might as well be him. As a precaution, Sephiroth makes sure that Illusionist is switched in before working his way up to the next room; if the crate that Naomi had positioned would hold his weight, he reckoned it'd hold everyone else that had come along with them. If not, at least he could levitate to halt the fall.

We've got ladders; path seems clear