NO...you can only book your "home" resort @ the 11th month and would need to wait till the 7th mo. to add more days.
Im not a fan of multi-homes. Lots of DISers do.
My reasoning is..say I have what you suggested...what if I need 105 pts. for a ressie? Do I borrow from that home?? Do I wait till the 7th mo. and borrow from the other "home" ? Will I have a few extra points left over from my 1st contract..what do I do with them? To me...its a managing nightmare!!
I have "all my eggs in 1 basket", manage 1 contract, make 1 ressie, dont stress over banking/borrowing. Certainly a pleasure at least for me.