+1 on the tongue weight. I drive mine forward on the trailer until the rear of my truck drops at least 2-3". If you don't have tongue weight, the trailer will drive you and accidents become more and more likely. You will be very jack-knife proned. My loader bucket is usually completely forward of the squared off section, basically overhanging 2' of the tongue to where I have to watch how sharp I turn the trailer to avoid hitting my truck tailgate with the bucket. I have a 16' bed on my trailer and probably 4 or 5' of tongue to the ball. I usually have a box blade or tiller on the rear, not a backhoe, which is much heavier, so your weight should probably be even more forward than mine.
Your tie downs look good. With my loader bucket forward of the front bar, my chains never interfere with my loader. I seriously want a 20' foot trailer to have more room to do it right, but I'm well under my weight limit and have never had to turn so sharp as to put a loader tooth into my tailgate yet; just not ideal.
You may want to hook the trailer to your truck and then load the tractor both forward and backward to see what gives you the best combination of tongue weight and situation on the trailer space.
Good luck.