This is what the map between Ben Carson and Hillary Clinton could potentially look like IMO (especially if Carson runs a particularly bad campaign):
Former Secretary of State Hillary Clinton (D-NY)/Senator Mark Warner (D-VA): 420 Electoral Votes
Neurosurgeon Ben Carson (R-MD)/Former Senator Rick Santorum (R-PA): 118 Electoral Votes
Lol why in the world would he pick Santorum?
Carson is very conservative, but I suspect he is the kind of candidate who would be willing to choose a more moderate running mate in order to balance the ticket. Cathy McMorris Rodgers wouldn't overshadow him too much, and neither would Kelly Ayotte; unfortunately I'm not sure how the Republican base would accept a ticket comprised of a black man and a white woman 
Also, one comment about your map: why wouldn't Louisiana vote Democratic in your map, especially since Hillary Clinton is the party's nominee? Louisiana is more urban than Mississippi, and both have a significant minority presence, so if the latter flips, the former should as well.
Good point about Louisiana. If Hilary Clinton is carrying Mississippi, she would probably win Louisiana as well.
