For 6-Lug, just go with an '84-'91 SJ D44/D44 or D44/M20. No narrowing required since they're something like 62" up front and 59" in the back. This would by far be the cheapest option.
Going 3/4 or 1Ton on 35's is a bit much. You'll lose ground clearance unless you shave the housings. For something larger I'd go with a D60/14B combo though. You'll probably pay a premium for a 78-79 D60 but the 14B's are cheap. You can easily shave off 1.5-2" off the bottom of the 14B without causing other issues.