should i remove inner spring for cam break in ???

Depends on what the seat pressure is. If it's 120 or less I don't worry about it. Above 120 lbs. I take it out. When you assemble it make sure all the lifters spin freely in their bore. That's the primary cause of cam/lifter failure. Valvoline VR1 has a good amount of ZDDP so it works well for break-in and NAPA usually carries it.