This is my level 9 empire layout. I seem to get a reasonable number of defense wins, and it is good for heroic defenses. Most of my shields and turrets are only lvl8 still. My losses generally are against level 10 or Prestige accounts rolling with lots of buffed Jets, but I think this is unavoidable whatever the layout.
For equipment I use Sniper GR, Rodian Skin, Burst Heat Sink, Burst Mounting, Rocket Heat Sink, Walls.
For Squad Centre I have 4 Snipers 1 Lugga.
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Main account: Bacon (level 11)
Second account: nEggs (level 9)
Squad - NewSithEmpire
LINE ID: sgu97cab