ideally, you would want to max flame touched, field command, and temper. maybe put a point in the 4th and ride + to skills if you are struggling for points. but maxing the 3 of those would get you the most bang for your buck. I would even drop points from the second node of cadence to do so.
Deadly Momentum is awesome. You want that super-maxed.
Of the skills you asked about, Temper is best because it gives you another source of flat physical damage. Then Field Command if you need the DA, which you probaby do. Flame Touched is nice for the OA, but since none of the other stats help you it’s not a priority - unlike a fire/lightning build where it’s godly. The attack speed from Squad Tactics is nice but doesn’t scale very well past a certain point.