I kinda think Expertise/Rey is kinda redundant. I think I'd grab the familiar Tactician. Alternately, switch to C-3PO and drop Breach Specialist. That's just me and redundancy, though. Other folks value consistency more, but I'd rather trim back a bit on that to try to gain an edge in another area.
I guess another thing to consider is Inspiring Recruit over Breach Specialist. That helps with Maul, and it also helps Lowhhrick recover from stress mechanics. I do like Breach Specialist for clearing out crits, though.