I definitely wish I had more suspension! I went on both trips with just Deaver +2 leaf springs and RPG bump stops. The back end of the truck was very well behaved, but the front skid plate took a beating because I just didn't have enough clearance/travel in the front. Hitting the front skid plate doesn't seem to damage the truck much, but my low back wasn't happy about it. After the overland trip in May I ordered the Icon suspension kit with shocks, springs and 37" tires (I'm keeping the RPG bump stop kit just to save some money). That is what the EXO team runs, and they have nothing but good things to say about it. Due to Covid that hasn't come in yet, but I'm hoping it's ready to go before the Enduro trip. Your setup sounds good, and should let you take the bumpier trails a lot more quickly and comfortably than I could. I was told, by multiple EXO members, that they discourage people from doing after-market tie rods. Apparently the weaker tie rods help save more expensive upstream components, and they are easy to fix/replace when they get bent.
I was using a fairly simple tie down system in the back of the truck to hold my jack and second spare. The latest trip to Baja completely destroyed that system, so now I have an SVC rack in the back of the truck. That is another thing I wish I had done before the last trip, as it would have saved me some aggravation.
I used an iPad with LeadNav for the overland trip in May, and then switched to a LowRance Elite FS 7 for the latest trip. I found the LowRance easier to use, and definitely easier to see, but I think either solution is fine. The EXO team all uses LowRance, so you're on your own for tech support if you use LeadNav, but that never came up for me in either run.
I have a basic Icom radio with a GJ motorsports third brake light and antenna mount. That combination worked perfectly on both runs.
Finally, I've been slimming down the list of things I bring on these trips. I brought a full Zombie-apocalypse load out for the first one, and still too much stuff for the second. You start and end most days near convenience stores and gas stations, so it's easy to get basic stuff like food, water and ice. Next time I'm going to bring just enough food for a few lunches, some water for emergencies and basic recovery tools: jack, plasma rope, tow strap, shackles, shovel, sockets, gloves. If you need more than that, EXO has a chase truck.
I am also keeping the cab of the truck free of loose items because they tend to fly around. We had all four wheels off the ground multiple times, and at least two wheels off the ground for long stretches of whoops, so anything in the cab tends to become a missile.
For both trips, the amber chase lights in the GJ motorsports third brake light would have been enough, as we weren't out after dark. I also have some fog lights on the front of the truck, but haven't had a chance to use them in anger yet.
So far the only damage I've sustained is to the outer CV dust boots behind the front wheels. They both blew out of their clamps on this last trip, so I'm going to need to get the CV joints replaced. The front skid plate looks like someone took a sledge hammer to it. I am stunned at how much of a beating these trucks can take without breaking.