Labby Question

Hey guys a little bit of help would be appreciated.  I have been following some cappers on here who I respect a ton over the past couple of months and using a Labby system on their plays.  I have experienced some success with this method and have been bumping up the number of lines I've been trying to clear at a time.  I was curious if some of the vets could let me know if they have found a safe amount of their bankroll to use for the lines.  For instance right now a number in my line is approximately .25% of my roll. If this is not clear, I mean that I clear out 5 numbers that are .25% in each line.  It seems to be working fine but that is probably due to the fact that the guys I have been following have been on fire.  Any help would be appreciated!