If this is your first 3D jet, I’d recommend building it with a cortex. Specifically for thrust vectored jets, they’re extremely easy to setup and will decrease your setup time significantly. I’m an iGyro users in all other airplanes except for the ones with vectors that are meant to hover. Additionally, aim to keep this airplane as light as possible. Opt for a pioneer instead of a Mercury, you don’t need the added functionality of the Mercury especially if you go for a cortex.

Are you using a Powerbox Core as well?