Brake upgrade & controllers

[Rxyb]

Just bought an 18' travel trailer for my trip/move to Alaska in July and have been thinking about upgrading my brakes. The trailer has 4 wheel electric brakes so I need to decide what electric brake controller to get. I bought the anti-sway towing set-up the guy used with his Chevy 1500. Dry weight is 3,450lbs. I use to tow my wife's car on a dolly with just the regular brakes but going 5,300 miles with hills I don't want any problems. Any help or suggestions would be appreciated!!

(I did get custom towing tunes...hope Corey gets the shipment from edge today!)