I dont know which FF to bank the points to and am in need of some expert advice from the FT community;

YYZ-BUH (NW) Min 4 tks/Max 8 (may cancel intins);
YYZ-LCA (AZ) 4 tkts;
MSP-LGW(BRS) 1 tkts;
& presently have 139K on AF (no status).

Which FF should i use to maximize points, status ?

Thks

PS: thought of MMiglia for AZ flights to get J/C class bonus..
PPS:NW tkts are B class