My Mahindra 4530 tractor with front end loader (7300#) and bush hog on 20' tandem 14k trailer seems to be a little much for the factory suspension. I would like to be able to put the tractor all the way to the front of the trailer. What rear suspension set up would you recommend? Power wise, the truck handles the load fine. I'm not pulling long distances. 30 miles max from property to property, and only a couple times a year.