I just bought a 2004 Coachmen Chaparral, the tongue weight is 830 lbs. and the GVWR is 10,830 lbs. Should I stay as close to the tongue weight as possible or go with a heavier hitch? I am in between a 1,000 lb. tongue weight & 10,000 lb. overall or a 1,200 lb. tongue weight & 12,000 overall. I don't want to buy a hitch that is too small for the load, but I don't want to buy one that is overpowering for that load. I have seen all different weight ratings on these hitches, any thoughts???