The easy answer - if you like it, stock up on it as much as finances permit.
If you love it, buy it like there's not tomorrow. You'll eventually get comfortable and slow down and not fret the concept so much of change (maybe).
Harris had good advice on this subject and I kinds went his route, just not as extreme.
Do the math on how much you need, budget that into your annual income. Don't use credit cards. And go for it.
Personally, I like to smoke a couple tins before loading up just to be sure. I've gotten stuff that I loved after a few smokes only to discover I didn't care for it later on. Tastes change, start with what you know.
There's my lousy. 02