Officially, BTEC will not give you any 'minimum' standards in terms of resources.  It also depends if you are doing Level 2 or Level 3.  If you are doing Level 3, I really do think that you need a suite of decent computers so that each student has access to one. I have always used Adobe Creative Suite for DTP work &Final Cut Pro for video work. Thlatter is Mac only and there are lots of alternatives out there for the PC, some are excellet and some are outrageously bad - do some research.  Then you also need digital stills cameras, digital video cameras (adapt as required depending on the pathways you offer). For video, buy as many of the best cameras you can afford.  If you are doing Level 2, the software can be less complex but must still deliver the desired outcomes. It is also the case that some of the cheaper and more 'straightforward' software is often not just that! Students often find the 'simplicity' and lack of functions quite limiting, so be careful.

I must say I do despair when I visit schools and colleges trying to deliver 'Media' on the cheap - it really doesn't work; the other problem is teachers with no real decent media understanding or background being thrown in at the deep-end and then struggling with things like Photoshop.I hope this isn't what you're going to experience.