No thread yet but will try to get that going soon...The departure angle is high on this design-it always looks like the axle is a little too far back though? I’m not sure how it will feel when it’s loaded. I half half a plan th put a removal mounting on the back to take my sons crf125-that will surely add some weight to the back- do you have a build thread for your trailer?
I don't think your axle is too far back. Not much worse to tow than a tongue-light trailer. Of course keep your GVWR in mind, but I can't imagine the tongue weight on your trailer being more than a few hundred pounds.
And I can affirm your thought that putting a dirt bike hitch-hauler on the back will balance things. I did that on my first teardrop build and it worked well. Let's just pretend I did it intentionally... :)