Squad defensive switch out?

Billcarson66

I have a 6pm payout on my arena. Starting next week I won't be able to play around that time. I generally can get top 50, but always have to fight my way back as I get attacked a lot. I run Boba(L), Lando, QGJ, Vader, and RG. I was thinking of subbing Sun Fac in for QGJ on defense. I lose the assist attack, but perhaps get more despells and my 4* G8 Sun Fac has 32k protection and health vs my 17k protection and health QGJ. Of course he is slower as well, but I'm looking at this from a pure defensive point of view.i appreciate any ideas if this seems logical. I'm level 72 on a late dec/early Jan shard. Wiggs have really come into the top 50 lately, but Lando and Boba are still the most common. I hopefully will be getting a 6* EP in march, so this only has to hold me top 50 for a couple of more weeks.