That's similar to my combo but I will be a few cubes less. I too am going from a 305rwhp 302 to this combo.
393W, Lightning block, half filled w/ hard block, Scat forged crank, Eagle H beam Rods, Probe pistons, TFS R heads, Comp cams solid roller 252/258 @ .050, 669/682 w/ 114 LSA, 12.2:1...