Im at work, so i cant look up some links to give you very easily. but, do you want about the same 'smoke' (vapor production) that you get from ciggs?
My 2nd tank ever was an aspire atlantis, and that would probably be plenty for you to start. if you have the cash to spare, id suggest getting a mod (the battery part) that can handle something bigger, in case you want to upgrade down the line. my first few setups, i didnt do it, and spent more in the long run as a result.
Ill try to get some more info for you when i get home, if someone else hasnt helped out already.
Edit: also, how much and what kind of ciggs do you smoke?