lots of good hints
The Nostalgia plus may be OK, maybe not - Duration may be too big for your driving style and build- maybe not
lobe centers may be too narrow for that CR- essentially a repop of the Direct Connection/ Racer Brown 284 cam
but I'd be looking at the XE275HL series if comp cams is your thing- and what they have may or may not be OK
The 268 most likely too small with that compression and it's not optimized for Mopar in the first place
U have a unique combination
I'd contact Racer Brown and Bullet/Ultradine lots more Hyd selections as does Howard
key is getting advise from the grinder for your combination
Lunati Voodoo is always a good call for MOPARS
agree on holding down overlap
really easy to give up the low end without having the flow or revs to have a big top end so build an "Engine Masters" type torque curve