Wedge, i have the ez 295's and run a 45 thou head gasket. The block has been decked 2x and i run the smith bros ball/cup. the ball is a 5/32 which was real important in measuring for the overall length. I ended up with a 9.690 overall length. i don't think the comp pushrod length checker has a 5/32 ball on the end
Another point, if you are running the supplied rocker assembly from Indy their instructions differ from the typical 2 thread count on the adjuster.
Oh yeah, solid roller with the comp 829 lifters!!
Let us know what you end up with.