How do you feel about the two-vehicle route?
$40k is alot of money (even if it is Canadian, lol).
If it were me, I'd drop 5-6k into making the 4Runner a really fun, off-road toy (selectables, lift, redo teh seats so it's nice 'n comfy, etc etc), and set aside another 3-4k for repairs/upgrades later. Now take the remaining 30k and instead of the 4Runner, get a nice big car - say a Camry, Mazda6, whatever... that will serve better for the family, road trips, MPGs, etc.
JMHO.

With 200+ Billion electrical parts, the world most complicated machine is inside your own skull.

Question Reality.
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'89 Rnr DLX "SR4.5", 32s w/ 5.29 locked f/r blah blah