Dengar and IG88 are all-stars for me. You don't have to have them, but I'm glad I do. Firesprays are also good for bomber builds, but I rarely find myself using them.

I use 3D printed imperial ships from the EU - for example I swap imperial shuttles for jump masters, Bossk is a gozanti, and Major Rhymer is an ATR. There are pictures in my painting thread, in my sig.