Long post ahead so apologies if I'm rambling. I'm doing it now
Didn't do a full season as I needed more time to save up money, but I got here on 15th August. It's amazing here - so good in fact that riding in the UK seems so pointless and rubbish
We just don't have anything that comes close to this back home.
You need loads of money. I came out with about 2.5 grand for just over 2 months. I'm actually doing ok money-wise but that's because I'm having to limit nights out as beer prices here are so high. My first night out in Vancouver I ended up spending about $100
Flights I booked with Canadian Affair, flying with Thomas Cook. Mine was £340 one way (as I'm not sure when I'm going home yet as I'm trying to get a job and stay for longer), and flights home are even cheaper - I've seen one for $50 Vancouver to Gatwick via Canadian Affair!
Accomodation wise I kind of wish I went with the staff housing just to meet new people easier. I'm in a nice private roomed condo in Creekside for the same price as staff accom though, but I don't have any housemates at the minute, so nights can be boring and going out by yourself is a bit awkward at first.
As for bike I'm riding an older 180mm Santa Cruz Bullit (w/old 180mm Boxxers) and it's spot on. I don't think there's any need for more travel or slackness unless you're riding all the double blacks and proper thrashing it. For all the fun blue/single blacks I haven't felt like I needed more travel and only properly bottomed out once on a very badly landed drop. I think a big slack dh race bike would be rubbish here as a lot of the more fun trails are full of jumps so it's better to have something flickable. Bullits are quite popular here as are Bottlerockets, Voltages, Demo's and the rental bikes are all Kona Stinkys. Just make sure your forks are good at absorbing high frequency bumps - mine aren't and my hands are slowly getting more nackered by the day. I struggled to open a bottle of pop with my left hand yesterday
Get your visa sorted as soon as it becomes available for 2012. It takes a few months to process so best to get it early.
All the trails I've ridden so far have been fun other than Schleyer as I'm not man enough to do all the rock drops so I ended up walking around a lot of it. My favourites are Crank It Up, Black Velvet (brand new trail which is ridiculously good and ends at the Fatcrobat log ride which is fun), Freight Train (apart from the container gap) Devil's Club, Wednesday Night Delight and Bluesium. Got a few bad gopro vids up here if you want to have a look.