It looks as though you are measuring tongue weight at the jack. Keep in mind the shank and hitch ball are resting in your receiver and their weight needs to be calculated in, probably using up your 35 pound margin.
Moving heavy items to the rear of your trailer to offset your tongue weight is problematic, especially with a single axle trailer. This practice will maintain your net tongue weight, but will also reduce your percent of weight on the tongue. This percentage number (12% - 15%) is critical in keeping sway under control. Theoretically, you could reduce your tongue weight to zero by selective loading. Not good, you would be all over the road.
