Scott, re 11. it would a whole new hole.
The new ninth, could play as far as 230 yards if the current forward tee on 9 is used. Otherwise, the regular tees would be shorter possibly creating a horseshoe teeing ground playing from multiple distances. Jason has not shot the distances yet, but I would guess the Par 5 8th is approx 550 uphill. #9 looks to be in the 400 yard range. But again, this is all just early ramblings from a couple of golfers, not land planners, archies or self proclaimed experts.