Thanks for the replys!
I think my friends want to do the bike park mostly, so in that sense it would make more sense for them to bring their DH bikes.
Jonny – you are probably right price wise, its probably better to book with you guys even if we didnt do much of the XC stuff or guiding because when you factor in everything, its still a decent price.
The bike is the main thing, at the end of the day I need a bike that will be the most enjoyable for me. I dont want to be under biked for the bike park and then having to end up renting a bike for most days costing a bomb. Perhaps the idea of getting a used 2nd hand DH bike and bringing it over, then selling when I get back is the best idea?