Dash
lone wolf
rey
hlc+title
Counter measures
-Vs-
Dash
Ptl
rey
hlc+title
engine upgrades.
which would be better at avoiding an alpha strike.
Which Dash?
PTL with EU is way more nimble.
If you're going to run PtL and EU, then Kyle Katarn or Kanan Jarrus would be better crew choices than Rey. This build's best defense against alpha strike comes from outmaneuvering the other squad. Slow-rolling to build up tokens on Rey is a great way to let your opponent position for that alpha strike you're supposedly building against.
The build with Lone Wolf and Countermeasures has fair odds of mitigating damage. If that's the way you want to play it, then I recommend adding Snuggling Compartment and an Illicit. Maybe Glitterstim, Hot Shot Blaster or Burnout SLAM.
If avoiding arcs is what you want, then as @jmswood and @BlodVargarna suggested, this Dash would be ridiculously nimble. Good luck figuring out where he'll end up next turn.
Dash Rendar (36)
Push the Limit (3)
Heavy Laser Cannon (7)
Kanan Jarrus (3)
Engine Upgrade (4)
Outrider (5)
Total: 58
Agree with @gennataos - standard dash is a great choice I think