I'm switching to an more armor/power type of play from stealth. Anyone have any tips?

no tips from me... my armor usage is 3.9%

i guess if u wanna use armor more, get armor enhance... get a powerful weapon that can take down players in lesser shots (scar, grendel, fy71 or shotguns) and can hold the ground in crowded areas.
Either that or use Energy Transfer to keep charging ur armor after each kill...

and keep hunting for battle areas and jump right in and blast away...

Power play requires alot of jumping, running, sliding....u might wanna load Mobility Enhance