Amberzcorner, to your question about how much data is with TELUS - not sure if you mean for a phone or a Mobile Internet device, as they differ. Regardless, information on our plans can be found here: http://mobility.telus.com/en/BC/plans/index.shtml
Do yourself a favour and wait for a bit - Microsoft just release a preview of Windows 8.1 at a developer conference (//BUILD/) which supports more device form factors including 8" tablets. Also, I've heard rumours that Microsoft is looking at using the Qualcomm Snapdragon 800 processor in the next Surface RT device, meaning it will likely have built in LTE (which is a very fast networking standard).
The current Windows Surface RT and Surface Pro devices lack SIM card slots. You COULD use an external USB rocketstick, but let's be honest - those are far less desirable vs something built in.