I'll agree with AdamDZ that the hydros are a bit overkill, but they're indeed good brakes and hydros aren't as maintenance heavy as some would make believe. Key is to do a yearly flush/bleed since the fluid does retain water. You certainly don't need bigger than 160mm rotors, I'll disagree with him there. You do however want to be sure to use XT rotors if you go that route as the swept area of the discs is specific to XT.

That said, BB7's are the gold standard of mechanical, and parts and service are available anywhere.