congratulations and the four days is about right for a kit to arrive. There are several suppliers and most of the kits in my opinion are about the same. Lots of good things about them and some not so good. Some suppliers seem to be more interested in helping out their customers, but the same is true with car dealers as well.
I bought my kit from boygofast and got what I paid for and am perfectly happy. I think in general you can save a few bucks buying them on ebay, It's the free market at work there.
If you need help just ask. Please don't just guess ask...