[Paul T]

We have a similar deck to what you describe, about 12' deep into a severely sloping yard - all built with a composite decking. Ours is big, I'd say about 1000 sq ft total at least, with 2 levels and a staircase. I didn't build the deck, it was here when we moved in (2 weeks ago), but it was built in 2001 and the PO told me it cost them $30k.