Firstly welcome to the wonderful game that is epic! secondly, welcome to the forum! there is a tonne of information around and loads of super helpfui people

my advice would be to drop the fire support and snipers from your infantry company, they're a great garrison force as they are, and not too heavy on the points, with the points saved, I'd suggest picking up a hydra battery, they're great at shooting up infantry so don't worry if you're not using aircraft in your first few games, plus they're fast, last week at a tournament, a sneaky march from my hydras nabbed my opponent's blitz and won me the game!

I'd also think about dropping one or both of the stormtroopers, they're pretty good, but a huge investment, they tend to work well when you free up lots of support slots with multiple foot slogging companies. If you're dead set on keeping at least one platoon, I'd suggest dropping the other and using the points to buy a formation of thunderbolts, and a shadowsword to give you some punch against war engines

also, remember to fire 2 manticores per turn rather than 3, you still get 2 templates, but then you can still fire a 2BP barrage on the following turn, much better than a single poxy blast marker!

Maybe drop the Rough Riders and replace them with Chimeras for the Infantry Company?

Welcome aboard, golan.

If you do that, you'll lose an activation.

As kyuss suggested, I'd be tempted to drop the fire support from the infantry company to gain an activation. Also, you can expect the Hydra to die pretty quickly, because it's the only AV in that formation.