So I recently bought a plastic cask from alix101 on here, which has turned up and it looks great.
Now....how do I use it? Buy now, learn later

So i've worked out from youtube and a few posts on here that I need to buy the following I think...
Some shives that go in the top hole: http://www.barleybottom.com/menu/product/&ID=197
Some keystones that go in the serving hole on the end: http://www.barleybottom.com/menu/product/&ID=118
Some hard and soft pegs: http://www.barleybottom.com/menu/product/&ID=173
And a tap: http://www.barleybottom.com/menu/product/&ID=165
Is this correct?
Also, a few questions:
Do I need anything else?
Is there anyway I can put some Co2 into the cask to make it last longer?
From what I gather on youtube...I stick a the keystone in the end, fill the cask (with nearly fermented beer, 2 points from FG), tonk a shive into the top and leave to ferment for 2 weeks.
When done, I put it somewhere to serve, let it settle, take a peg (hard or soft?) tonk in the top...then take the tap, tonk it end and pull a beer.
Have I missed anything?

Cheers,
Si