While Phoenix is a great team for arena, GW and TB/TW farming them has left you without scoundrels for credit heist. Credit heist is a valuable source for credits. A team of 5 scoundrels at 4* is needed for the final tier.
However, since you already chose the Phoenix path, I'll suggest that you keep farming them to at least 6* before getting Lando, Boba, ST Han and IG—88 to 4*.
Meanwhile, you should farm Biggs, Boba, JC and Millenium Falcon and FOST hard nodes every day. Biggs' ship is a must—have and the others are great too (though JC is only mediocre in end—game). Royal guard is another hard node to farm every day. It will help you get R2D2 later.
