Seems like it would be problematic. ATV would have to be centered over the axle about 60/40 Front/rear which is between your cross members so trampoline off for sure. Also looking at total weight ATV @ 1200 lbs w/ fuel and Typical cat & gear at 400 - 500 lbs plus the the sprung weight of the trailer frame itself you are exceeding the 1500 lb design limits of the trailer axle and suspension or getting too close for comfort to the limit of a 2000 lb axle IMHO.
If you "put the rhino up front" as listed in your previous post you will exceed the trailer tongue weight limit of you vehicle almost certainly. Even if it is not exceed the trailer will pull VERY poorly due to the poor weight distribution.
Transporting both items on the same trailer could probably be done but you will need to use a much heavier duty trailer to carry the load. Think something like this with your trailer cross members attached would probably do the trick.
http://www.tractorsupply.…payload-capacity-0191267