That looks almost identical to mine with virtually the same empty ball weight. I can guarantee the loaded ball weight will be 100kg extra. This is not a problem so long as you are aware and load the rear of the vehicle accordingly.
I don't think any of the forward fold campers that the OP is considering would have this issue. All main tent poles are permanently fitted (just fold open and extend internal hoop). The awning requires four poles with guy ropes. All the forward folds we looked at were the same.
And the point already mentioned about same track as vehicle is the key, which is almost certain for most of these campers.
Scott
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