This seems a good number. In my experience with the system, the number of active pilots has a dramatic effect on the action economy, since the Angels get as many turns as the players do, but only 2/3 the total "action points".
Do keep in mind, and probably warn your players as well, that this is a fan-made game, not something professionally published. You will almost certainly run into some complications while running it.>>56956729
I said I'd drop in with my campaign, so here is a summary:
Following the GM book's advice, I gave the setting and metaphysics an Egyptian makeover. Evas replaced with Pharoahs, NERV replaced with ATEN, etc. The base of operations is now in Cairo.
The 2 PCs are played by my best friend and my wife, respectively, who recycled characters from our Exalted games. *Adam Jaeger* , a German Manufactured pilot who knows full well he is just one clone among many, and *thinks* he is okay with that, because "the mission comes first." *Araceli de Sol* , a Spanish orphan who learned her long-dead mother was a researcher for ATEN, and agreed to be a pilot so the orphanage could get U.N. funding. I also put in 2 NPC pilots, and hinted there might be pilots in reserve.
Behind the scenes, 80% of all characters, including the pilots, are genre-shifted versions of characters from my long-running Exalted games. The kaiju themselves are the Yozi, and the Egyptian codenames I give them are designed to obfuscate their true identities. This permeates every aspect of the AdEva campaign, including the possible endings the players might bring about.
We are 10 sessions in, and my players are only just starting to realize that something is happening beyond the usual Conspiracy, as I become more blatant with my references and cameos. If they ever bothered translating some of the NPC names, they would piece it together rapidly.