With regard to who sits in which seat it has been mentioned that the senior f/o must sit in the Lhs. In my previous company this was not the case. The acting pilot in command had to be in their trained seat. A rated pilot could sit in any seat in the cruise as long they or the other pilot was an APIC. We also were qualified for acting pilot in command if we had an ATPL and had completed our first recurrent check. Now I do not know what AFs rules are but the setup they used is not unusual and would suggest that the less experienced pilot was in the RHS and was in command.
With regard to the stall warning this troubles me that an integral part of dealing with unreliable airspeed is not actually always available. Surely this needs to have ground air logic as part of it's operating envelope.