Been through a few suspension iterations on my 2010 and can lend an opinion.
Recommend keeping lift minimal, else face the prospect of correcting caster angle, etc. It's not a serious offroad truck and never will be due to the size, so keep it to the "modestly capable" class and the reliability will sail you into the sunset.
Old Man Emu stuff is too stiff IMO. Their nitrocharger shocks are nice but valved too stiff unless you're loaded heavy. Same with their springs. Front coils are 740 lb/inch, which is too stiff even with a 3/16" steel bumper and winch. Rear leaf packs are ok but only have like 5 leaves, so not as supple as something like Deaver etc. I have the OME Dakar leaf packs still on my truck, which needs 400 pounds of sandbag in the bed to settle it 2 inches and keep it smooth... or a family load of camping gear, etc. So when used like a truck, those leaves are great, but overkill for daily driving. Recommend stock leaves, and supplement with bags/Timbrens for occasional overload. Could change just the shackles to tweak height in the rear. I have the OME greasable ones which seem ok.
Fave rear shocks are the Bilstein 6112 with the remote reservoir.
Fronts, Bilstein 5100 monotube with their 650 lb/inch coil. Mine are set at the 1.9 inch lift setting and that's a nice spot with 33"/34" tires.
Lockers would be overkill IMO. The ATRAC system works fkna awesome in the snow already.
Lastly, for any rough driving I'd recommend disconnecting or removing both the front and rear sway bars. The front end really smooths out when the sides are actually independent. Prob best to keep the bars on for highway driving though I usually leave mine off except for hauling my camper.
Good find, hope you love the truck.