That's the esc is fine, I've actually got one of them as my spare esc.
these are the batteries we all run at £5.25 each
http://www.giantshark.co.uk/gens-130...-p-406442.html
The motor may be brushless I don't know as I can't find the spec on google but you are proberly right.
Seeing as your in Surrey we run micro nights in Wycombe on Monday nights if you want to have a look or chat