1) Goggles (2nd hand £35.00)
The most important element. Try on goggles, either in a shop or at walkons etc
Your goggles must be comfortable for you, and need to fit your head. e.g. Dye I4s are excellent goggles but big heads like me will have a very exposed chin
2) Knee Pads (2nd hand £12.00)
Not so important to get you started, but they will take care of your knees
You could even get 'gardening' knee pads
This depends on where you play and how you play. Kneal down on gravel and get a sore knee, dive and get bad knees.
If you are going to do these activities havea thing about the type of knee pads. Military style strap on ones will move, and are just for knealing. To crawl you ought to look at the ones that slip onto your leg under your trousers and will stay in place. Alternately go for padded trousers, or trousers that can take inserts. A cheap alternate is a soft mouse mat inserted into a knee pad pocket, or sewn into the inside of your trousers.
If you are likely to crawl then elbow pads should be considered. A little while back I had an extreme case of 'students/plumbers/paintballers elbow'.
Check out 'Olecranon Bursitis' on google images, you will then always wear elbow pads!
3) Electric Hopper (2nd hand reloader b £25.00)
No further comments, you need a hopper, the basic is gravity, next up is gravity with a shelf to reduce jams, electric is next up, force fed is better. You could pay £80 for a second hand force fed rotor, or under £30 as above for a good second hand hopper
4) Air Bottle (2nd hand £95.00)
A 3000psi aluminium/steel cylinder will do most users, and new costs about £30
A 4500psi fibre wrapped cylinder gives you more capacity when fills are available, but costs £150
Both can be used for 5 years before retesting, (around £25 excluding any postage), the fibre wrap can be tested twice with a maximum 15 year life.
A 3000psi can be retested forever, but at £30 is disposable, a 4500psi is an investment.
With a £200 limit go for a £30 cylinder for starters, you can upgrade later and keep the 3000 as spare or pass it on
5) Playing pants (which will have proper padding) (2nd hand £25.00)
Not essential. I assume you have casual trousers, padded trousers are not essential but you may like to get them later. You can wear anything in the woods.
6) Paintball gun (2nd hand £200.00)
You are aiming to play in the woods, but there is no such thing as a woodsball marker.
The entire range of paintball markers is available to you - you need to see, feel and try out markers to know what suits you