Long way to tow. I might investigate flying in and driving the Titan back if it's driveable. However, you should be fine towing if you're careful and aware.. Many folks are towing travel trailers this weight and more. I tow an Airstream TT with my 2011 Armada and it weighs about the same as what you're considering.
Sorry if most of this is elementary to you, but you didn't say how much general towing experience you have.
A few suggestions in no particular order... Your tongue weight will most likely be your limiting factor. Try to stay within the Nissan 910# (or whatever is stated for your model) limit on the factory hitch. You can easily do so by positioning the Titan on the trailer, but you need to have 10% to 15% of the total trailer weight on the hitch in order to reduce trailer sway.
Sway can roll your entire rig over. 15% of 7,600 will put you over 910#. About 12% is the most you can go. A tongue weight scale makes it easy, but if you don't have (or can't borrow) one, you'll have to estimate it and use trial & error. If your trailer doesn't have an anti-sway hitch or weight distribution spring bars, you need to use real caution. Go very slow at first and try steering from side to side at low speed to get a feel for how much the tail wants to wag the dog.
You can download the Nissan Towing Guide for your vehicle at this link:
https://owners.nissanusa.com/nowners/navigation/manualsGuide
You might also slide under the Armada and check the hitch attach bolts for snugness.
Especially if you don't have any weight distribution on the trailer hitch, be careful how much "junk" (ice chests, parts, etc.) you load behind the second seat of the Armada. It can really add up fast.
I would recommend that you inflate the tires on the Armada (especially the rears) close to their max cold inflation pressure - as stamped on the tire sidewall. (Mine are the 18" tires and I run them at 44psi-R / 42psi-F when towing). This will help to reduce heat buildup from sidewall flex. I also have airbags in the rear coils that I run at 60psi. Since you have the Platinum model, the air suspension should handle it.
The main thing is to go slow. If this is just a plain flatbed with nothing but a ball coupler, I wouldn't go over 50 MPH. At the first sign of sway, don't fight it with the steering wheel. Hold the wheel steady, take your foot off the gas, don't hit the car brakes, and use your brake controller to actuate the trailer brakes only.
I use tow mode, no cruise control, and rarely use "D" (overdrive) - unless it's downhill. I use 4th most of the time in order to keep the revs roughly between about 1,500 - 2,000. I also try to anticipate downshifts going up hills and do so manually rather than waiting for the torque converter to do it for me. The tranny is programmed for fuel economy rather than efficiency and will lug the engine down well below 1,500. Going down steep grades I slow way down and lock the tranny in whatever gear it needs to keep the speed from building up in order to avoid burning out the brakes. I also manually downshift on most stops in order to save the front brake pads, but be careful not to do it at too fast a speed or the engine revs will startle you. I've got 47k miles on the Armada and my front brake pads/rotors are still fine.
Have fun