Towing 5200lbs with a 06 Nissan Pathfinder

Thanks for the input. I made an edit on my first post to clarify that the dry wight on the Sonic Trailer is 4200lbs. If I add an extra 1000 lbs I will still be 800lbs below max of my Pathfinder. I have been reading on the forums and a rule of thumb is to take the max towing of the vehicle and only tow 80% of that. if I were to purchase the Sonic and load it to the max I would be at 86.5%. (that is IFI load it to max)