But if they have Biggs and Slave I, you probably have a problem. Kill Biggs first, then a (maybe even masterplanned) Slave will be your death.
Like I said, you have to judge how your bracket looks like and decide if continue to farm ahsoka or switch to qgj, who is quite useful in end game and can be farmed only from cantina shop. Whereas Ahsoka can be farmed from multiple places. I don't mean to stop farming Ahsoka, just adding some dynamic decision making. You can get 5-10 shards from cantina shop with 2 refills daily. You'll probably start fleet arena with her around 4-5* from cantina shop farm. After you get all ships to 2* you can probably evaluate your bracket strenght and decide then to go all in with ships from fleet shop or ahsoka + ships from there and qgj from cantina shop. I'm not negating what you wrote, just giving a different perspective from my experience.
And probably in a few levels also in your bracket the people who have Boba already, will suddenly show up with a 4-star Slave I, when the farming of the 80 shards is done.
I know that. Ahsoka will be waiting in reinforcements to deal with that :)
I first thought they saved the energy for some days, but no - some people really spend that much money every day.
Well, if you're working on a good salary or have your own business it's much more efficient to buy crystals for refills and invest your time to ean $$$ rather than play the game.