If you want cheap and don't care about streetability at all, then throw a spool in the 14 bolt. It will never unlokc like a Detroit, so you'll always scrub and wet/slick driving will be fun, but its nearly unbreakable and cheap. Otherwise I'd go with a Detroit for strength.
For the front, an ARB will be nice on the street and tight turns offroad you can turn it off, then reengage once you made the turn.
Otherwise a good LSD. If you aren't going hardcore in the big 'ol burb, then you probably don't need a locker in the front. But a Detroit or any fullcase locker will be strongest under the weight of that beast.