Find Those Weapons

I want a durable and reliable paintball package for mostly woods-ball but sometimes speed-ball. Here are a few things that I need:

~Barrel that’s accurate at a minimum of 35 yards
~Hopper that holds 150+ rounds
~Great ability to customize on the marker
~Barrel sock, doesnt have to be fancy
~A mask that gives good eye, nose and mouth protection for under $40, ear/neck protection is a plus. Plain is best
~No sight rail
~Being able to play woodsball as well as speed-ball/ air-ball with the same gun would be a big +

Also,
1.Can you mix & match different parts from different guns/companies? Such as a Smart Parts All-American on a Tippmann A5, would that work or not?
2.What is this used for?http://www.sportsauthority.com/product/index.jsp?productId=2762213&cp=712507.712513&parentPage=family
3. What is a good price to pay for a quality brand and model gravity feed or agitated hopper? I’ve seen them from $4 to $180+ and am kind of confused

I would recommend a Tippmann 98 custom because it is very customizable. Get a smart parts progressive barrel and a viewloader evolution 3 loader. Its cheap and feeds 23 balls per second. For the mask just buy a cheap Jt mask. Tippmanns are mostly for woodsball but you can play speedball with it if you want. You can mix different company barrels with your gun like in your example. The hoppers that are over $100 are mostly for speedball guns so just get a viewloader evolution 3 or a cyclone feed system if you get the tippmann 98 custom.