Look at your opponents roster and imagine them setting their 5 toughest teams on defense. Have a plan to full clear that and set your best defenses after that. However, defense rule #1 is to block being solo'd by nest/wampa. This means removing Phoenix and R1 from defense.
Best suggestion I can give is to stop thinking in "teams of 5" and start thinking in "2s and 3s." Sure, 5 man cls and jedi are awesome. But that leaves you with Phoenix and R1 which are pretty bad. Rethink these squads to give you what you need on offense but help some on defense. Can you clear that revan without r2? If so, r2 could really bolster one of those defenses.
It all comes down to banners. Rather than thinking "how do I get a defensive hold?" instead think "will this give them 60 banners?"