Larry,
Whether it is the Morrison limbs or the Shrew limbs, the foam is nicer by a margin in my opinion than the actionboo limbs. With the recurve limbs you are not going to see as much advantage to adding the carbon as in the longbow limbs, but if Cody (Steel) says the carbon makes his foam core recurve limbs significantly faster, believe him. I just don't have any of the Morrison foam/carbon recurve limbs on any of my bows. I won't order any more actionboo limbs from Morrison now that I have several sets of foam core recurve and foam/carbon longbow limbs that he has made. However, I will order more of the foam/carbon limbs.
The choice of limbs that you say you plan to order and the combination of riser woods sounds outstanding. Don't hesitate -- just do it!
Allan