There you go. Xorand has found the 4x2 very competent. Why not try to do some off-road mods to your 4x2 first to see how far that can go? It's all cheap and simple.
disconnects, lockers, tires, maybe you want to lift it...etc 4x2 is a good ride, fix it up a little. If the 4x2 was good enough to buy how could it be so desperately wrong for you now?

I don't know why Todrick is more excited about a conversion than you are but he's not going to be there 24/7 trying to make it work. You are. Do you know how easy it is to armchair quarterback? It is also putting yourself way behind being someone that doesn't already have tools or wrench alot. And then to take advice from someone that also doesn't have tools or wrench their own vehicle. Doesn't sound like a sound start.

And you aren't doing anything worth your money-or more importantly, your time. People put alot of time into their 4x4's but at the end of the day they have something completely different than stock to improve capabilities, be unique and tackle some big obstacles.

What you are proposing is something anyone can simply buy in an hour. And it will be better because it will still be under warranty and manufactured to Nissan standards.

So at the end of the day what will you have compared to what you have lost in time and money?

NOT worth your valuable time or money.