I've been toying around with different deck designs and shown below is what I have decided on. The south portion of the deck, which will extend down the south wall of the house, is not shown. The south portion will also have a small upper level for entrance/egress from the second floor. The rafters for the roof on the east portion of the deck are 16 foot long 2x6's on 12" centers. They will have to be supported in the center by some sort of truss member that will connect to the eaves on the east side. Hurricane strapping will have to be employed to keep the porch roof from acting like a kite and detaching in strong winds.