only thing I bought when I first started was a full face mask, as I didn't really want use the ones on site that smell/had other people sweating in (hygiene point) other then that as above rent the gear. Places i'd recommend for Hampshire sites are the two I go to regularly which is South Coast CQB (that's at lee-on Solent) and UCAP Bunker just outside of Portsmouth, quite dark though as its an old WW2 bunker so I would take a torch for that one.