If I was production, this is the teams and route I would pick.
Lorena & Jason/Azaria & Hendekea (TAR12)
Kynt & Vyxsin (TAR12)
Kelly & Christy (TAR13)
Terence & Sarah (TAR13)
LaKisha & Jennifer (TAR14)
Jaime & Cara (TAr14)
Lance & Keri (TAR15)
Maria & Tiffany (TAR15)
Flight Time & Big Easy (TAR15)
Brian & Ericka (TAR15)
Gary & Mallory (TAR17)
Nat & Kat/Brook & Claire (TAR17) - depending on which of them wins or doesn't win
I would just leave TAR16 out.
As for the route:
Leg 1: USA (not LA) - somewhere in New Zealand
Leg 2: New Zealand - Australia
Leg 3: Australia - Mongolia
Leg 4: Mongolia - Kazakhstan
Leg 5: Kazakhstan - Oman
Leg 6: Oman - United Arab Emirates
Leg 7: United Arab Emirates - Armenia
Leg 8: Armenia - Latvia
Leg 9: Latvia - Denmark
Leg 10: Denmark - Cote d'Ivoire
Leg 11: Cote d'Ivoire - Togo
Leg 12: Togo - USA (not LA - we've had too much of LA since All-Stars 1)
Clearly I don't like staying in one country for more than 1 leg!