I have seen people saying to wait until after the first 500 or 1000 miles to tow, but I am guessing this is for heavier loads?? I have a 4x8 all alluminum trailer that weighs around 300 pounds. I was thinking of grabing some trees and shrubs today at the local nursery (about a mile from the house). I only have 150 miles on my 4r so far; should I wait?