I'm looking for some feedback on my 300 Sullust list.

Specifically, do I need any upgrades?

And which are the best objectives I can pick?

Assault Frigate Mk. II-B (72)

Assault Frigate Mk. II-B (72)

CR-90A Corvette* (44)

-Mon Mothma* (30)

4 X-Wing Squadrons (39)

2 B-Wing Squadrons (28)

298 Points