While mixing glycerin and tobacco isn't new (hookah smokers have been doing this for a long time) I'd worry about using an actual lighter or flame when you consume it. When done right a hookah is fairly close to actual vaporization, I'd be a bit worried about increased amounts of nasties from actually taking a flame to it.
If you don't mind me asking, why are you trying to combust this eliquid? I'm not really familiar with WTA liquids, do they go bad quickly or something? If you are low on juice or something I'd bet one of the groups here would help out, smoking a juice/tobacco mix out of a one hitter seems like a move of desperation, there's got to be other ways man!