Don’t worry about hitting the scales. Your vehicle is not special compared to others.
You can get a rough weight on it easy and you don’t want to overdo it anyway on the trailer size. Some people weigh every bag of chips and roll of TP and have them cataloged in case the mythical weight police ask them .......
Your bigger concern is your original question. Is it tow worthy?
With us only knowing what you’ve said about it, honestly it’s about 50/50, if it’s in good shape and depending what you’re doing with it. Hauling down the I 10 in moderate weather is different then pulling 6% grades when it’s 100deg in the shade.
I personally would be skeptical of a 15 year old vehicle without knowing its history and knowing that most all the wear parts are fresh, like the hoses in your picture. Original Arizona hoses or are they newer?