You would be better served getting a cheap and dirty microphone preamp like one of those Art Tube things to have some control over the mic gain before you send it to a board or whatever you're recording to. I use one occasionally for simple stuff. It's a great piece of gear for 50 bucks and some bed...
You have things backwards. I don't recommend using a pickup to record upright bass. It will sound like dog shit, or like a bass guitar. Any microphone is going to sound better than a pickup. Even a '57 on a stick will sound better than a pickup. The only reason to put a pickup on your upright is to ...
You're in the right place, but unfortunately this place is a ghost town these days. The people that could answer the question probably haven't logged in since George Dub'ya was president.
Without knowing what comes with those setup sets, I can't really say. I've had the benefit of access to a guitar workshop for the majority of my life, so I never had to purchase any tools myself. Make sure you have a good set of screw drivers, allen wrenches, and a heavy straight edge. I don't think...