[Steeveedee]

As far as pulling is concerned, you are good. A 4.56 axle isn't going to give you any real speed, as you know, but it'll get you up some pretty steep hills. Braking, you're good with stock if the trailer's brakes work OK. The front discs are a great improvement for rainy weather. As far as the hitch, I have a load-equalizing hitch that transfers some of the weight forward. This actually raises the rear of the truck a bit, but helps the handling quite a bit. I eventually want to put on a rear stabilizer, because the new tires (Firestone Transforce) have more oversteer than the old Michelin tires that were on the truck before, even with the rear tires 10 PSI higher pressure. And that's without the travel trailer (I guess that's what you call a caravan, there?). My FiL had a '63 Chevy truck before he had this one and towed a 4000 pound trailer with a 283 CI engine, and 3OTT. It had serious limitations in the Rocky Mountains, which is why he bought what is now his daughter's and my truck with the setup you see in my signature.

I think that you'll be fine with it as-is. I'd be carefully with the speed parts potentially making it less of a tow vehicle. I haven't researched the parts you are using, though.