^you could lower the gravity of this beer no problem.
basically, scale everything down.
this recipe is set for 85% efficiency (i think) - so assuming you get 75% efficiency and cut the grain down to 13.5 total lbs and cut dextrose to 1/2lb you should get:
1.066 starting gravity.
Use this tool to play with the numbers so you can match YOUR system and needs: http://www.brewersfriend.com/allgrain-ogfg/
basically, scale everything down.
this recipe is set for 85% efficiency (i think) - so assuming you get 75% efficiency and cut the grain down to 13.5 total lbs and cut dextrose to 1/2lb you should get:
1.066 starting gravity.
Use this tool to play with the numbers so you can match YOUR system and needs: http://www.brewersfriend.com/allgrain-ogfg/