few random questions on 318 build

thanks guys, i cant go to a roller cam although i really want to. im thinking that i will just keep the rpm down to 7000 just to be safe. i have that cam because that is what one of their techs recommended to me. i agree it seems a little aggressive for hyd flat but thats what an "expert" said i needed and i'll be the first to admit i dont know everything. so i trusted them and the cam is sitting in my garage.

what happens if i go past that limit on a hydraulic lifter? will power just fall off or will i actually break something?? how do i know where the limit is?