i'll let the stealthy boys give you the poop on what gear to get.
i'll tackle the access part. to get authorised access, i would contact the bands directly, offering to tape and provide them a copy. two ways to try this: start with smaller acts that are more easily approachable and just talk it up with them, once you do this a few times, the bands and the venue will get to recognise you and soon you'll have no trouble. the other way would to be contacting a bigger act ie:waifs, who have been exposed to the scene in the states and will probably be more open to taping, get approval via email and take it with you to the show. if there's a festival coming up, contact the promoter as early as possible and offer to archive it for him(this may take some investment on your part, but hey you want to get into taping anyway. right?) just keep hammering away. if the scene's that tight, and noone else is doing it, seems like a great business opportunity, recitals, choral groups, etc, building a name for yourself. good luck, and keep us informed.
jr