Capital ship upgrade advice

Svo

I need some help, I'm trying to get aa's ship up to 6* but I can't make a dent in this fight....
I'm running aa ship at level 74 skills 3 3 2 3 and aa is lv 80 gear 10 skills 3 3 4 5.
Ships- ghost lv 74 skills 4 5 4 3 5 all characters lv80 gear 10.
Phantom 2 lv 73 skills 6 6 5 4 4 all characters lv 80 gear 10
Wedge lv 76 skills 6 4 3 wedge lv 82 gear 10
Biggs lv79 skills 5 4 4 Biggs lv 82 gear 10
Cassian lv 74 skills 5 4 4 4 4 Cass lv 74 gear 9, Jyn lv 80 gear 10, k-2so lv70 gear 8...
All ships are 7*
Any help would be appreciated.......