Well done lass, i'm going to ask the all important question that no one else has.........
So what breed did you go for in the end after your long debate?
With regard to paper work, it's really pretty simple, get a CPH number, if they are not kept on your holding, either use the one there, or remark it as a separate strip and get a new one for it. So many folk though, just use their own (of course no one on here, i'm sure someone will now say).
Apart from that it's just the flock number, and you actually have 30 days from the arrival of your sheep / goats to call and get one.
With regard to basic kit, I have a back pack, which is my sheep 'go bag', it contains, a drench gun, a spray gun (for crovect, clic etc), a set of dagging shears, foot knife, purple spray, red marker spray, ear notcher, note pad and pencil, a tail/testicle ringer and rings. . . . . I think that's about it, and I usually have what I need. Oh and my crook, which is a wee bit bent now, but works.
Other than that it's hurdles, trailer, weighing scales and dog.