Kavil, TLT, Unhinged Astromech, Marksmanship. 4 shots, 75% chance of a hit/crit with each dice.

I feel like Scum Y-Wings are a little better because of Unhinged and Aggromech. Also Kavil is great.

I've used that build before it was damned effective.

For the Attack Shuttle I'd go with

Ezra + Hera/Lando + Predator/PTL + TLT

With Hera you can still fly red while stressed or with Lando you can still get either focus or evade while stressed, both works well with Ezra's pilot ability.

Sabine + Ezra (crew) + PTL + TLT

Sabine becomes a low-level Ace hunter with Ezra guaranteeing hits for the TLT

You can't use Lando while stressed.

I prefer the Kwing to a Ywing, but that's just me. I like the dial better, and the fact that you can still shoot at range 1 outside your arc.

The k dial is the y dial with all the red options removed (do get green 1-banks though)

What the k offers, aside from being a badass ridiculously awesome model, is SLAM and tactician

Also Miranda

For the Attack Shuttle I'd go with

Ezra + Hera/Lando + Predator/PTL + TLT

With Hera you can still fly red while stressed or with Lando you can still get either focus or evade while stressed, both works well with Ezra's pilot ability.

Sabine + Ezra (crew) + PTL + TLT

Sabine becomes a low-level Ace hunter with Ezra guaranteeing hits for the TLT

You can't use Lando while stressed.