Get an Aussie Locker and put it in the rear. I think it will have less of an impact on daily driving because it unlocks easier and possibly makes less noise.
A locker in the front with stock birfields and axles will greatly increase the chances of getting to do a trail fix. Also, from my experience, Toyota trucks tend to lift rear wheels off road more than they do the fronts which makes a rear locker essential. Jeeps seems to lift the front wheels more so it might make sense for a front locker first in that case.
