The two things that I would pay most attention to are:
1) Your payload rating. You can pretty easily consume 600 to 800 pounds of payload before you ever hook up your trailer. People, pets, hitch, accessories, stuff in the bed. Also, the dry trailer weights are a starting point. Most people are 1,000 to 1,500 pounds MORE when loaded. This will add about 150 to 200 pounds more on tongue weight.
2) Trailer length. The "old saw" is divide your wheelbase by 5 and the result is the approximation of the maximum trailer length you should pull. So, 145" wheelbase equals 29 feet of trailer. If you pull "Out West" or in the mountains, I'd pay attention to this factor. The trailer is a huge sail back there.
Do you calculations and make your decisions based on facts. Just because someone else "made it alive" with a bigger trailer doesn't mean it's a good idea.
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