Is the nicotine 100mg/ml? Of course, the higher the nicotine the less you will need. I would start with just a small amount of the doubler so you don't end up with a bunch of tasteless
juice. Or better yet, order a one ounce with the nicotine. Good deal right now-
buy 2 and get one free. It would give you a chance to maybe try something new without breaking the bank.