You are welcome . The sweetener does just that, sweetens, menthol adds a nice finish to fruits ,some like it in tobacco too. The ethyl maltol I like to use in tobacco flavors to "smooth out" some of the sharper notes. You can get them later as you learn more and want to experiment further . You have what you need to get started though. Just have some fun and take notes on your findings so when you tweak a recipe to your liking ,you can remember your successes and not inadvertently repeat your failures.
A little lemon (from those plastic lemons at the grocery store can make some fruit flavors "pop" .(like a drop or two per 5mls juice)
Some like to add apple cider vinegar to tobacco flavors. Man, I serious when I said "The fun begins". It is fun.Frustrating at times also.
But, when you make a juice you really like , any frustration is well worth it.
It really is all trial and error. Again,good luck and have fun.