Suspension for '12 with a GFC

I need some help figuring out what suspension to invest in for my 2012 OR AC 4x4. I am not new to suspension, but new to truck suspension -- so far, I've only setup track car suspension. I am a bit out of my element with trucks and have and hard time understand what is actually necessary for my usage.

My stock is basically stock save for 265/75/16 BFG K02s and my GFC camper. I will do a light weight interior build out and from what I've estimated, I should be able to keep the truck under the max GVWR.


My use case:

I've done a few camping trips tossing things in the back in bins, Dometic fridge, portable battery + solar. I will be taking longer trips in the not too distant future; I would have headed to Baja for a few weeks this winter, but unlikely now with COVID19, so Mojave or Anza Borengo is the likely destination for the holidays.

In roughly 2 years, I will have a 45 day 'sabbatical' from work. My intent, at the moment, is likely to spend the entire time in Baja. I've already spent two weeks in Baja with my truck setup with my previous Snugtop hi-liner -- was an amazing trip. If the 45 day trip goes well, there is a non-zero chance I might take off a year (or 2?) and travel around North and South America, in stages as needed.

I am not planning to seek out 'wheeling' adventures and rock crawling, but I am sure to encounter difficult roads and rough trails. I am not opposed to investing up-front in 'better' suspension, but if it is not needed, I'd be quite happy to stick to rear leaf replacement, new front coils and Bilstein 5100's if that would do. If something more 'advanced' is called for, I am open to that.

Thank, appreciate the advice.
DJM