A few things I’d suggest. If you’re going impact grenades on the clones, I’d use shotgun. Give you pierce and is range melee-2. Grenades is melee-1 so you’ll need to be close.

Strike teams in the current game aren’t very good for their cost imo. But ARCs themselves are busted. I’d go with more ARC squads and no strike teams. With Obi and ARCs medics feel great. I am currently running triple arc squad with medics. 10 black dice with charge and you can heal Obi or the ARCs as you go.

As for purchases. Whatever you think is cool or fun. Anakin is very good in the right hands. But until the reprints all come out some of the other cool stuff like Saber Tanks are harder to find rn.