Launchpad + Ableton Live Set Up For Minimal?

So I usually spin progressive house but I really like to mess around with minimal techno sometimes, really fun style to mix. I was believeing about using a standard mixer/deck setup for progressive but when I play minimal going to a setup of a launchpad thru ableton live, maybe eventually with a maschine thrown in there.

The basic way I'm conceptualizing it is having multiple channels for kick drum loops, snare loops, and "tools" such as http://soundcloud.com/chris-liebing/...b-trippel-tool . Having each sample/loop correlated to a button so I can bring them in and out, add and take away layers.

Some basic questions though I have about this, since I'll be honest and I'm not all that familiar with using ableton:

1. Would this setup be feasible in a club setup? For example would I be able to run the launchpad thru the house soundsystem, would I need an audio interface? How would I be able to set that up?
2. Since the Launchpad doesnt have a crossfader or volume faders would I be able to fade tracks in/out if need be?
3. How is the effects section overall in ableton for live dj'ing? Can this also be controlled by the launchpad?
4. Live setup situation, lets say I come after a dj playing on cdj's and I have to beatmatch into him, is there anyway to "beatmatch" with a launchpad thru ableton, whether it be tapping out a master bpm or anything?
5. Are there any good websites to purchase tools such as the one above? I would use beatport but they dont have tools listed by genre; makes suitable ones difficult to find