It's easier to gain plenty of protection, because the maximum from +health I believe is +5.88, whereas a protection primary on a 5-dot is +23.5%.
A set of 6 health mods will net you a +15% gain total plus any additional +health or +% health on primary and secondary. You can, if you want to sacrifice speed on Zeb and Kanan, put four 5-dot mods on that all have +23.5% protection (arrow, triangle, circle, cross). My Kanan has 4 health mods, 2 CC mods. He has 21k health at G8, but 19k protection (including 10k just from mods) because I put protection on arrow, circle and triangle.
Zeb's unique grants +15% protection recovery doubled if debuffed.
Chopper's is only 15% health plus a protection up buff, and Kanan grants protection up too.
