I have the same thing, except from B3. Its a great way to begin your all grain process, and will give you great results. You can make it all yourself if you are handy as well.
Downside is that you will be limited to 5 gallon, regular gravity brews, and limited to a maximum of 13 pounds of grain. And in doing a big grain recipe, you will be limited to 1 quart of water to 1 pound of grain, and no mash out.
So in the long run, if you are wanting big beers, you will be wanting a larger mash tun. Myself, I just bought a 12 1/2 gallon Ice Cube, and in a matter of 10 minutes, added a Zymico Kelwer Kitz and Bazooka tube. I have a Thermothingy set up on it now as well, so I can monitor the mash temps. Its a nice big mash tun, not limiting me to to 5 gallon or normal gravity brews.
Thats my opinion anyway...