Quartz
Hero
I have an interest in playing a battlemaster fighter, but I really don't want to get a 3rd attack,
Does not compute. That's a major, major, debuff. You're also losing the feat at level 12. If what you're after are the BM's manoeuvres then consider taking another class and the Martial Adept feat (possibly more than once if your GM allows it). Paladin and Warlock (PoB) are two very different choices.