Welcome....
If you want a mix of tourney and woodsball, you should be able to by a used Smart Parts Ion / Revvy II - Egg / Random Air setup from the classifieds here which would do you well for that price.
If your not sure what you need to play paintball, I would recomend you consider the following total list and think about your budget accordingly, although I do acknowledge you have a few bits already mate.
(I remember when I started out I wasn't sure about the limit of what I needed, and some of the little things I didn't know about put me over budget.)
- Mask
- Battle Pack
- Pots (140 pots are best)
- Gloves
- Sqeegee, pull through, or fluffy.
- Barrel Sock (A must for safety!)
- Marker (gun)
- Hopper
- Air system
- Air bottle cover
- Full set of batteries plus full spare set.
- A few tools and sundries relevant to the kit for general maintenance, changing batteries, etc.
- And a big bag to carry it all in. Those generic luggage shops will sell you a big holdall type bag with wheels for about £15.
Have I missed anything peeps?