Ok here's my idea. I'm going to repaint Armada Optimus Prime, Jetfire, and Overload into the Omegabots. Also, I will include the minicons Astroscope, Payload, and Skyblast as a micromaster style team, The Planetary Exploration Patrol. Here's the plan...

Optimus Prime = Crossfire
Sparkplug = Corona

Jetfire = Countdown
Comettor = Impactor

Overload = Ironclad
Rollout = Flare-up

Astroscope = Sky Spy
Payload = Flattop
Skyblast = Liftoff

Jet Magna Convoy = Omega Supreme
Requiem Blaster = Nova Cannon

I have Tech Specs writen and I will upload them soon.

Also, there is to be...opposition

omg foreshadowing

You might want to include more information in your first post. All anyone can comment on is the appropriateness of the mold choice for something that is named Omega Supreme. (but apparently is a 3-member combiner, so it's not the Omega Supreme we know, so we really can't say if it's appropriate to your fanfic concept. Once again, not much to comment on.)
PS: I'm overly critical.

Sounds like you're looking to make something like this:
(sorry for the crummy quality, I whipped this out in a couple minutes)

sort of, there will be more orange and a new omega supreme-ish head.