Half LBX20 hunchback, half MPL boat for good pinpoint. You can use it for both med-close poking or brawl (but maybe it's little bit too hot for that when facing fresh mechs).
4/5, I've seen the 1xLB20X, 3xMPL build working well in higher tier play. Need to play peak-aboo over time, not really an in-your-face brawl'em till they die type mech.