RACEPAK

hello everyone.

i just finished my engine rebuild, (pistons rings rods bearings ect...)
any now i need to run it so everyfhing will seat in place,

my question is... should i do it with the stock cam or with my new zex cam?
i'm asking this because iv read that when installing a new cam it is needed to hold it at steady rpm for a several minutes for it to sit,
and thats not a good idea with new piston rings.

thanks alot