I'll be using aftermarket lift springs designed for the front
of a Jeep Wrangler YJ I picked up from Summit Racing.
They are 46" eye to eye, 5 leaf pack, 4" of arch, with a linear spring rate of 287 lbs/inch per spring (574 lbs/pair). The loaded weight of the trailer will be roughly equivalent to that of the front of a YJ. Combined with the 5" shackles I made, I anticipate it working well.
I'm not going to worry about shocks until the leafs are setup and cycled the way I want. But most likely I'll end up with a 2" shock body 6" travel shock with a little angle of dangle.
And the first delivery showed up today. Max coupler hitch...and the primary reason why I decided to stick with leafs. It wasn't cheap, hell it's closer to 10% of the overall budget, but I expect it to perform perfectly for my needs.