Anytime you can use a double-strength, super extract is a good thing, start out with minimal amount and adjust to taste. The one you specified looks fine!
The new JC Cured is very strongley vanilla...there are also some clear vanilla extracts, have not tried them for flavor. To bring out most possible flavor, you may even want to thin vanillas slightly with EverClear....it will mix far better (stay suspended) in your VG.
Also, you may find it helpful to first make your Ethyl Maltol the way
Vaporer outlined (this is terrific, it yields highest possible suspension of EM in a 'constant')
Go to post#144to that solution add your tobacco absolute(s)in the amounts specified, since they need to be diluted in EverClear or Vodka also.
I am currently trying different combinations of EM/absolute solutions, but my "juices" are ahead of my "uses" right now! (I got a little carried away making "MIX" batches!) I only use about 3 ml of juice a day, so this could take some time.
These combinations take time to adjust to your own taste, which is really the whole idea of "DIY", so start out your process by doing very limited (3-5 ml) batches. It's very easy to just make multiples then for a larger stash of 'making' mixes. It's such fun, absolutes are very hard to work with because of their low viscosity, they're sticky and potent!! Don't forget to add a tiny pinch of Menthol to "cool" the tobacco a bit. So any shortcuts you can come up with do cut down on waste and ease of use.
I do prefer though not to just "dump" all the flavors together, because I'm afraid of flavors becoming muddied and lost. That would be a serious waste, MHO. Absolutes are expensive, especially my favorite
Nicotiana Rustica.
But I do think the Ethyl Maltol and tobacco flavors belong together in the same suspension.