I'd throw in more hops, but that's just me.
Why not just Batch Sparge.
put that grain in a bucket with a false bottom, pour your 155 degree water in, stir, let it sit for an hour, drain, pour some back, with some more 155 water, drain, you done.
gonna need a few more gallons of water than yo uwant for beer.
and don't worry about OG.