Is it possible to use push email, apps from appworld and internet browsing on a blackberry with this plan: http://www.telusmobility.com/en/BC/blackberry_plans/bb_social40.shtml and not need to get the more expensive plan with data even though i would never be using it?

I'm asking this question because I am using an iPhone 3GS and wanting to lower my bill by selling the iPhone and going BlackBerry. Is this a good move?