I use a Land Pride RCR1548 on my BXs and at 425 pounds, I need weights or a FEL when using it on anything but flat land, no way I would try a 5'. Woods, LP and King Kutter make units especially aimed at the SCUT for while they are CAT1 3PH, the geometry is different than on bigger machines with CAT 1.
You will be best served operating within the intended parameters of your tractor and equipment.