But it clearly states on the quote we are legal to do so, I can'tunderstand why we wouldnt be legal or licensed?
I suggest you weigh your complete outfit as you drive it, as I think if you're going by manufacturer's weights you'll be over-weight (+3500kg).
Here's a useful flowchart I just found:

I see Frontera weight: 1820kg trailer: 700kg Clio: 980kg
That comes to 3500kg.
Now add fluids, wheels, tools and goons and you're over-weight.
I hope no copper has access to the interweb or basic mathematics skills when they pull you over, but hey it's your license, not mine.