I drop his engine upgrade to fit two Golds with ion cannon turrets. They run interference, draw fire and zap higher PS things that like to get in the donut hole.
Interesting concept. You could also get a Rookie X-Wing and Blue B-Wing with FCS in for those points. Do you have trouble maneuvering Dash without the EU?
Not so far. I do not like the substantial loss of repositioning options, but it has not cost me a game yet. I have won two (rather small) store tournaments with the build so far. The Y-wings really pull their weight.