It'll be good to see the back of that bloody wind for a while, your ported 461 pulls that 28" no worries. Went back a few pages and don't see any of your pics either but your video's seem to be ok.
Ya the weigh adds up all right,you probably can work out the weight in your trailer roughly by the dimensions of mine 10' x 5' height with cage total 1 mtr. (cage 700 trailer side 300)
My trailer weighs 1100 kg plus the cage weight ?.