doubts resistance team

Finn's zeta has been widely (if not unanimously) regarded as the single best return on investment of any zeta in the game. If you have any ability to activate that zeta I highly recommend that you do so. I believe, however, that the OP might not be in a place, roster wise, that zetas are a feasible option (please pardon if I assuming this incorrectly). If that is the case, I would then recommend doing what you could to develop your team in whatever direction would allow you to access zeta materials the fastest and certainly give Finn the first one you have available. Otherwise, the best recommendation I can give is to move away from resistance and develop a different squad.