Thanks for the input Robert.

I don't want to sound cheeky, but I was wondering if you could provide some links to sites for an example a HPA system, small compressor and a regulator that you would consider useful. I'm currently looking around it's quite difficult making some decision, not that I would buy anything straight away but it would mean i would have something to think about and know I would be looking at the right things.

Some examples:

HPA - link

Compressor - Link

Regulator - Link