We managed to do that the first day we got our kits. Of course we had to try EVERY SINGLE FLAVOR we got right then and there in the first hour.
WOW - talk about blowing your head off! My head was spinning so hard I had to put it down and wait awhile to continue sampling. The nice thing is that when you reach that point, the idea of lighting up a real cigarette just seems ridiculous.
Try not to give yourself a headache! The couple times I did that, I had to lay my PV down for an hour to get back on track. On the plus side, the warning signs are so hard to ignore that I'm fairly certain you couldn't vape yourself sick unintentionally.