Did you dual feed the direct clutches? It's pretty much free and doubles your 3rd gear capacity. I would of least went with the 34 element sprag, but I guess if your leaving the engine stock and maybe swapping out the whole setup down the road it doesn't matter much.
Ya know, I was going to do that, I remembered reading about it in one of those links you posted. But I forgot about it till just now when I saw your post...

No way I'm taking it apart again. Lining up all the little teeth on the clutch frictions and getting the parts to seat together was enough to give me more gray hair. 
I wanted to do the 34 element sprag, but, unfortunately, it was a money thing.



