... It'll be very rare that I need to haul the entire TLB, and for all the other chores it will be super handy to have. I'm going with this trailer. ...
Patrick,
I have a 16 footer, too. Around here a lot of people consider it a "pipe" trailer because the side rails are nice heavy 2-3/8 pipe. 7,000 in dual axles, too. BTW, my trailer is 1,000 lbs, so 6,000 payload in theory. No electric brakes. 102" wide. I have used it to haul much - some small tractors, some non-implements. Here are some important points in my 20 year experience chronology:
At around the 10 year mark, the stamped steel trailer hitch failed. This is what you have on yours. I learned that this was the weak link, in that they are limited to 5,400 lbs by design, thus your limit. The "bulldog" wrap-around type are designed for heavier situations. I replaced the stamped steel hitch with another exactly the same, simply due to $$. After more years, I felt really uneasy about that, so I replaced it with a wrap-around.
At around the 12 year mark, I bought a set (4) of electric brakes. Boy, what a difference in stopping and personal confidence. No longer required my 3500 pickup to do all of the braking work.
Around the 20 year mark, I added a "trailer electrical box" to the trailer and wired the trailer into the box and a 7-wire cable into the box that plugs directly into my pickup. I made sure that even with the trailer at a 90 degree bend, the cable does not stress or come unplugged from the tow vehicle.
Tip #1: be sure to always buy ST tires, not LT or passenger. They are designed for the side loads that your double axle design will provide. Also, ESPECIALLY when your load is more than 50% of capacity, be sure that all tires are at max pressure. This keeps them firm and ridged, especially for turns. Failure for a tire to maintain it's shape causes belt separation, then tire blow-outs, regardless of their age.
Tip #2: this was alluded to earlier: be very, very cautious about loaning the trailer. I
never do. You can expect that those who don't have a trailer will not be trained, even self-trained, to pay proper attention to what they are towing. They will drag it over curbs or into ditches on right-hand turns, even with a full load, they will not notice that the right tires are off the edge of the pavement on shoulderless roads, they will backup when something is in front of them and not notice or remember the trailer is there until trailer meets their fender.