I would reccomend using Scubabatdans base recipe that he posted a while back and then play around with some different vanillas until you find the one thats right for your mix. The base is really nice because you can play around with some different flavor notes as well when you feel like having something a little different. This is from one of his posts,
TA (Tobacco Absolute), and EM (Ethyl Maltol) is a great base. It allows to to add pretty much any other flavor to it. This is my tobbaco base concoction. Unfortunatly the seedmans darkens it up alittle, but it is fairly clear at 10%.
You will need the following:
Perfumers Apprentice - Cotton Candy 2 x 1oz
TOB506 Commercial Cigarette Concentrate 4 x 1/2oz
Perfumers Apprentice - Tobacco Absolute (1. Pure) 1 x 2.5ml
Now, the cotton candy from perfumer apprentice is ethyl maltol suspended in PG @ 10%, warm the cotton candy and the 2.5ml of TA (tobacco absolute) in a sink of HOT water.
Get a 4oz bottle to add everything into, uncap the cotton candy and pour it all into the 4oz bottle, then uncap the TA, it will not be thick now as the hot bath has made it thinner. Use a pipette (note the TA will stain the pipette so use this pipette only for TA) and put .3ml of TA into the cotton candy (About 6 drops). Now cap the cotton candy and shake until it is mixed. Now add the seedmans concentrate to the cotton candy and shake until mixed.
The result is a approx 120ml of tobacco base that is very satisfying IMO @ 10%, and you can add hazelnut or peanut flavor to your mix to give it a nutty flavor. Add vanilla, black cherry, or caramel to give it those notes.
When adding menthol us it at 3% to the 7% tobacco base. In Dan's recipe? All 4 1/2 oz bottles (2oz in total).
I would probably start with Vanillin on the vanilla flavor but something like vanilla swirl or vanilla cupcake might work pretty good for you.
