Harry, you should probably use the recommended load cases except for your OCC case. Anyway, this is how I would set these up:

L1 through L3 as is for hanger design
L4 through L6 as is.
L7: W+D1+T1+P1+H+CS+F2 (OPE) OPE case with vent forces, use for OCC restraint loads.
L8: L7-L4 (OCC) segregated effect of F2, intermediate load case.
L9: L6+L8 (OCC) use Scalar Combination method under the Load Case Options tab. This is your code stress case for OCC.
L10: L4-L5 (EXP) code stress case, the only EXP you need.

Note that the OCC and EXP cases have removed the effects of cold spring. This is because you are not allowed to take a credit for cold spring when computing code stresses (this is why L6 has no CS in it).