You can keep what feedback you want, and discard the rest. The trailer you listed will be way more than 700 lb tongue weight. You did not tell us how big of a family, but with that trailer, and 2 air conditioners, I am guessing at least 2 kids.
On my way home with my trailer, after I moved my belongings form old trailer into front storage, I weighed 1450. This was with propane, no water, and nothing in the cabinets inside. I removed some of the stuff in the front storage.
I have towed my trailer with several GM 1500 pickups. That trips were 10, 25, and 50 miles. I had no family members with me when I towed for these trips.
I have also towed my trailer with HD pickups, and with 3500 Van. Would I travel for hours with my family in the 1500, absolutely not. Can it be done, yes.
