I agree with the above sentiments to strip off the camo netting from the Wyvrens. I'd also strip the heavy bolters from the battle cannon russes due to their ordnace weapons. Then I'd strip a plasma gun off each vet squad as they can only fire 2 out of the hatch.
Dropping all these nets you 115pts. That's 125pts free factoring in the original 10.
Using this I'd add an aegis line w/ quad-gun for more AA and guaranteed 3+ cover for your tank line.
But you've no one to man the gun so I'd drop one vet squad for a platoon. After dropping one, you have 180pts. With this I'd add:
Platoon Command: - 30
Priest - 25
Infantry: autocannon, flamer - 65
Infantry: autocannon - 60
This gives you a unit to fire the quad-gun and fearless bubble wrap for your tanks.