Sins you own a spyder, I'm assuming your cheap. So am I. You want either want a view loader force($30) or a halo ($50 on eBay) also, the pilot sucks.
The Spyder pilot Acs is a Spyder pilot with an Anti-Chop System. It would be "better" than one without it because it is supposed to chop (when a ball is cut in half by the bolt before it has fully dropped) less paint.
Kingman Spyder.
A halo($50) on eBay
You pour them carefully from the bag into the hopper.
The Spyder Pilot is center fed, so there is no need for elbows. Also no spyder elbows would fit because of the new style of threaded feed necks.
It will not fit. the Pilot uses 9v.
put mask on, screw tank in, put a hopper on, put paint in hopper. press on button, pull trigger.
It should do just fine, I wouldn't try to play a hardcore touniment with it but for your typical field it is a good starting choice. Look into a good hopper like the invert halo too.
A custom products Barrel and regulator.
No. You need an offset rail or the sight will be blocked by the hopper.
The Spyder Pilot paintball gun can be purchased for $160 without the scope, with the scope costing an additional $80 making a total cost of $240. These purchases can both be made from amazon.
Try E-paintball.com, ANSgear.com, and the spyder official site.