Not knowing your loaded tongue weight and going by your loaded trailer weight I'm going to guess 1000 lb bars or maybe 800. Why that size is so they can provide sufficient weight distribution. Your target is to put proper weight back on to the steer axle. This is going to be one of those things where you'll have to try one out and see how it goes. The hitch dealer should be able to assist you when you bring the loaded trailer in for set up.
2011 ORV Creek Side 22RB