That link you posted at the start is a good read thanks!
Indeed all the forestry trucks around on Vancouver Island seem have fairly narrow rubber on them.
Picking a good widely available tire is a smart move too.
A really good point the post makes is the majority (80%) of increased contact surface
comes from the length of the tire.
Also less fitment issues always a plus.
Could you not use some quality spacers or less backspacing on the rims could still give you a bit wider stance?
Your new rig should be able fit 31"s (diameter) no problem,if not I am sure there are a number of Vancouver area members that will lend you a grinder......

I am such a sucker for big meaty tires so I will probably go even wider at some point,
with all the fitment and trimming issues that goes with it.

I have to say I am pretty keen to see what you are cooking up here!
Right On!
