RE: Selfbow & stacking
A self bow can be about as sweet as any laminated bow--using heat/steam, you can make a deflex/reflex longbow or even a recurve. Straight limbed selfbows are similar in hand shock to laminated bows of the same design.
Stack depends on draw length, bow length, tiller, etc. I have an osage selfbow that draws very smoothly to at least 30".
Chad