If you're after a full set up read the thread 'newbie' thread. It's really detiled about how you should spend you're budget.
Personally i suggest you get a high end mask for around £50, somthing like grills or i4's.
For a hopper get a rotor £50/60
Bottle, cheap Steele ones for around £25/30
Pod pack-£25/30
That will leave you with £250-300. You'll be able to pick up a decent marker like the etek or etah and have money spare for anything you want or need.