Thanks Scott. I found a set of the jacket brackets on Amazon for $19 with free shipping (prime member) so I have those on order. They'll probably arrive before the hitch :-).
I had never heard of the "cub". I only knew about the 200lb models. I found a little blurb about it here: Hensley Hitch Options | Hensley Mfg.
Seems like they lightened things up considerably and it is intended for trailers under 6000lb. The GVWR of my new trailer is 6061 but I doubt I'll ever hit that so this would probably have worked (but I do like margin), but I didn't even know it was available. I'm still guessing it's over 100lb, but it does look interesting.
jlgail, can ou give us any more info? $1300 is almost reasonable for the amazing geometry that it provides.