GAC on a new Acc

The only Aim on my second acc is to get good in gac. There are some paths i could go for. I need some advise on what to do
1.
Phoenix/Empire/Dr/Jkr/OR/Malak

2.
Phoenix/Empire/Cls/Ewoks/Bhs

3.
Seps/Droids/GR/GAS/Ewoks

4.
Phoenix/Empire/FO/FO
Stuff i get while farming slkr

5.
Phoenix/Empire/See
Troopers

6.
Phoenix/Empire/Cls/JKL/JML

7.
Nothing really legendary but focusing solo chars like nest, kylo, wampa

8.
Something completely else