Falcon for your son (comes with VI and EU)

Imp Vets

Tie FO

TAP

Imp Aces

Starviper for autothrusters

Also, the Decimator has three debris obstacle tokens, which are tournament legal. So, it can add some extra options of what obstacles to bring in a tournament.

DICE

I've got two (original) cores, so I'm good on dice I think.

Is it better to buy the TIE/fo in the blister or do you get better cards or whatever picking up the Force Awakens Core?

I hope the Autothruster card shows up in another pack sometime soon.

The FO expansion has everything you need for the best build of Omega Leader, who is the best FO out there. The TFA Core has a few good FO pilots, but the expansion is better, imo.

Get 2 packs of Imperial Veterans. Then run TRIPLE DEFENDERS!!! That's all you'll ever need, unless of course they ever release the XG-1 Assault Gunboat or Skipray Blastboat