I wouldn't consider upgrading to RCV's until/unless you ever have a problem with the OEM shafts; the factory axles are plenty strong enough for the vast majority of people... mine have survived multiple Moab trips, other ORV parks, etc. With RCV's you may have stronger shafts, but everything else is still OEM strength; knuckles, dif, housing, etc etc...
Also in looking at your list and depending on how hard you want to run her, if you're going to the point of trussing and building to hit the rocks, you might consider the investment in 1 tons; IMO. Multiple posts on here on the cost comparable vs the gain (strength and peace of mind).
Cheers