whit77, cig eliquid .co.uk do gold and silver flavour concentrate by Hangsen. Sorry, can't post a link as my poxy tablet won't let me without making it an twenty minute task!
Top shout mate. I made my first inawera order from them a week or so ago, and they are brilliant! Top service as well.
The good thing is that I have found you don't need too much of the inawera flavours to taste them, so your "master plan" should work out very nicely for you. Keep us up to speed with how you get on.
PS - Sorry, I misread what you wrote. I don't know what they do in tobacco, aside from RY4. maybe drop Bryan123456 a line and ask his advice as he is arguably one of the most knowledgeable people when it comes to inawera flavours. Hope this helps.