Hi and welcome to the forum

You've gone for the 2 ideal mogs for your situation.
404 with lpg is a good call, bit gutless on the hills but parts are easily available now due to there being so many made and the armys getting rid of parts.
416 is good on power, especially if it's fueled up, it'll do 50mph with standard axles and is fairly comfy in the cab, the long wheelbase is stable for offroad use and makes it more comfortable on the road. parts are starting to get hard to find though.
cheers, Brian