Front tire loading

[Code54]

The tractor I am looking at loading the fronts on is a B7200 4x2 with no loader. The tractor weights approx. 1200 lbs and is used by my wife to pull a cart around the property and to cut grass with a 48" rear finish mower. If I see a good deal on a little tiller I may get that so she can do her garden (its only about 1000 sq feet and flat and she would like to till it herself - hey why argue right) I am guessing we are looking at adding maybe 4 gallons to each tire to get around 75% full. (so lets say about 30-35 lbs maybe) We have a 4x4 MX5100 w/loader so I wont be buying a loader for this tractor and just want to make sure that when she comes up one of our hills she will have the front wheels on the ground and can steer. I have widened the rear tires (turf tires) as far as it goes, adding a factory ROPS/seatbelt, built and added a 50lbs bumper and just want a bit more weight for her. At some point I would like to get rid of the rear mower and get a factory belly mower for her, but until then I need to find some simple ways to add some front weight thus the idea of loading front tires.