I know! I've been wanting to do some osage, and yew also but it's so expensive. I need a source for yew boards for backing.
I made a takedown for the bow swap, don't knw if you saw it, but it was a 68" with the same size riser, and R/D longbow limbs, and it worked much better. I think I'm going to go to a nice R?D longbow limb for any takedowns for now on. The recurve is just too much stress in a short limb on a takedown. Plus honestly I think a good R/D is just as fast for a wood limb.
I think I may just do up a nice new riser to match them though. Osage and walnut or something like that. Also I drilled the holes for the limb bolts and alignment pins at a distance of only 1.75" and I'd rather go to 2.5" or 3" for ease of alignment.