Good Day Brett:
You have learned one of the top five lessons of the RV industry. Just about everywhere they can, they get by on the cheap. That includes parts, assemblies, materials, AND workmanship. They know that educated buyers know and believe this. That's why they offer an OPTION of stronger axles with disk brakes on some trailers, for a pretty steep price I might add. They know buyers will pay up for a little more margin.
Even in big toy haulers such as mine, the three, 7,000 lb axles just equaled my Max Trailer Weight of 21,000 lbs. But from that, I put 4,100 lb on my 5th wheel hitch. I paid up for the 8,000 lb axles for the primary purpose of getting the hydraulic disk brakes. Another lesson from the top five is nothing having to do with RVs is cheap to the retail buyers.
Yes, your two 7,000 lb axles doesn't leave you much margin after connecting to your tow vehicle. So if you do go for a trailer in that situation, just slow down and be careful on rough roads. ALWAYS keep the tires inflated properly. They are a very important part of the total suspension equation.
Dave
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