First Pump Post

So it is official, I am a pumper as of 6:15 PST. Crazy!
My Minimed rep was totally cool and we hit it off right off the bat. We went over all the basal and bolus options and how everything works. It was great and I am totally excited about this. I do have some questions that I forgot to ask so I am counting on you OC for some help.
1. If my infusion set comes out early (which I expect happens) do I have to fill a new reservior and dump that insulin or what?
2. I went with a 23" tubing and I am wondering what you guys use and why. I already had a lot of fun changing into my pajama's! The other option I have is 43"
3. Do I need to keep an infusion set and reservoir with me at all times?
I am sure I will have more questions soon but let's start with these shall we?
I guess I should join the Insulin Pump web ring now right? I am so amped right now!
My wife and kids gave me a pump birthday present. It's a t-shirt that says "Change happens, courage reacts" (which was that sweet little saying that has stuck with me since I heard it) on the front and "One 'bete' at a time" on the back. Sweet.