I wouldn't worry too much about the added strain on the frame, most of it is back into the trailer frame and really it isn't much different than the load on it already from the hitch/trailer themselves. To me the Load Distributing hitches are not really required as long as the trailer is loaded correctly, a LD/antisway setup using the
cam system are where the benefits can be had.
I would try the trailer without a LD hitch and if you find it sways a bit too much or the load shifts more than not, you might want to consider getting one, remember a LD hitch doesn't take the place of a properly loaded trailer but when things shift they are nice to have.
