GP, that was pretty standard. My list week ago was based on those units. Also take two Cannons, or one of each of Cannon, Mortar and Helblaster. And some State Troops. Maybe Flagellants if you don't take the Helblaster or the STank.
Full shooting, full magic and STank were cheesy, especially combined.
Really the question with the Empire is how you spend your Character choices and Special slots. The rest sort of follows from there.
-Z