O.k, I was looking at Pricepoints Bike Kits, and you can get a complete Race Face/ XTR kit for $1399.99 that's a deal. I'm sure you could probably swap out the brakes for discs.
If you have your bike shop put it together, you'll never learn! It's worth buying the tools and doing it yourself.
If you have your LBS do it, you might as well buy a complete bike from them! Support them w/ your business that way. If you buy online, don't take the parts in, it just pisses them (us) off!
__________________
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger