I got this list I wanna use in a league on Thursday, how can I improve on it and any tips on flying it?

View in Yet Another Squad Builder.

"Whisper"

Veteran Instincts

Gunner

Fire-Control System

Advanced Cloaking Device

"Omega Ace"

Push The Limit

Weapons Guidance (Want to replace with Comms Relay but I don't have it.)

Stealth Device

"Zeta Ace"

Predator

Weapons Guidence

Stealth Device

If you have another copy of Push the Limit, I'd consider putting that over Predator on Zeta Ace. I think Predator kind of doubles up with Weapons Guidance, they both do similar things (mitigate blanks), and I think Push will serve you better. Comms Relay is certainly great, but if you don't have it, you don't have it.