In part, yes - continuous load stresses the battery more.
What you're really targeting is what are the parameters at the lowest usable discharge state of the batteries that won't exceed the CDR rating for the batteries. Most regulated mods will cut out when the charge state gets to around 3.2V. If your mod puts the batteries in series, double that to 6.4V for the calculation. Give yourself 15-20% overhead margin for safety; if the calculation shows that you could run a build at 100W at the lowest discharge state, you're going to be fine at 80W. There's still even more margin there because we rarely run our batteries down that far, so you could run that build at 100W with no issues with batteries that haven't dipped into the lower end of their charge state.
Thanks for the advice, I am trying to learn as much as I can.
LG HG2 $5.99 3000mAh High Drain IMR Battery INR18650HG2
These are the batteries that I should get correct? Just making sure before I go to purchase. Today is going to be my purchase day of all my good. Been waiting for a while. Might be asking a few questions here and their but I am almost done and I will get out of everybodys hair. I have been talking quite a bit on this thread..Learned alot as well, overall.