Well, y'know.

Aside from the fact that I doubt Gem would want Impact using a Rage Rocket on Renny, and that the plan seems to rely a lot on the happy homunculus, I guess it's fine.

Renny is not a golem and he's not a midget (even if he's shorter than most of his peers). >_>

The plan does has a lot to do with Renny because of the unique set of circumstances favoring it. But it also clears out most of the opposing forces without Renny's contribution (Or rather a minor contribution from Renny's Trainer Action). Also, while the plan HOPES for a critical hit, the damage that is done even on a failed roll is still very worthwhile, so it's not a Win/Lose situation, but a Win / Win Less situation.

And I could just give Impact one of Renny's own Rage Rockets after the battle if it becomes an issue.

Yeah, sure. That's the issue.

Still, Gem even sucks at fake quitting so I'm sure we'll hear his opinion about it shortly.