Most of the stuff would be in the trailer which the trailer is 3500lb max. Just trying to make sure what I choose can handle hauling it off-road in pretty much any conditions. As for new or used I doesn’t really matter. It’s also going to be my only vehicle I own
I looked at Jeep’s but they end up being to much and everything else other than a Tacoma seems to not have the right tow rating.
What is "too much"? Give us a budget to work with.
A new diesel Gladiator sounds like the best vehicle, since the trailer you have planned is right at the exact max for a 4-door Wrangler (and 1k past a 2-door's rating). If you're comfortable being at the max, I'd say a diesel JLUR might be the ticket. But I assume both of those options are "too much"? You might want to look at a Colorado ZR2 diesel if that's the case. More capable and better for towing than a Tacoma, IMHO (diesel for towing, and front and rear lockers vs. rear only).
Still, there are ton of other interesting options. Without knowing more of what you need/want, it's pretty hard to give good advice. What is your budget? Do you want a truck, or SUV? It will be your only vehicle, so what does "daily driving" consist of for you? Does fuel mileage matter to you? Do you have a family/pets etc. where you need a certain number of seats and interior space? When you say the rig needs to be capable of hauling the trailer off road, what exactly do you mean? A lot of people say "off road" but actually mean "off pavement" and just do "soft roading" on groomed forest service or other dirt/gravel roads. Others say "off road" and they mean they run the Rubicon trail for a warmup.
In short, give us a better idea of your budget and use case, and I imagine we'll be able to help more...
-TJ