I just upgraded to HQ9, so have to upgrade my credit vaults before I can upgrade Starship Command.
I find 2x TIE Interceptors VIII to remove walls at my attack point, then 6x TIE Defenders VIII to hit any clustered turrets revealed by my Elite AT-AT taking out the shields.
This works well, though can be expensive, and worst of all takes a hideously long time to commission (2h20m)
(-:- Eidolon -:-)
Sith'n'Slytherin - Squad Leader
HQ: 10 / Donated: 14,346 / Reputation: 1,089 / Base: 2,792 / Medals: 17,857 / Atk: 2,239 / Def: 333 / Joined: 2015-02-15