An '09 female bee at 800g should be breedable for next year. Then you could save your money and get a breedable male morph to pair with her, maybe a cinnamon. Then you'd have a shot at making pewter bees, pewters, cinnabees, etc. Or get a butter/lesser: queen bees, lesser bees, pastel lessers, etc.
If you get the killer bee male and some normal females, you'll only be making bees and pastels. Nothing wrong with that, but that's it until you get some morph females. And even if you hold back a female pastel or bee, the only thing else you could make would be more killer bees. Like I said earlier, morph females are key to making the really cool stuff.
If it was me, I'd get the female bee. In the long run I think she'll be a better investment and give you a lot more potential. Just my 2¢