Do you have tubing to go from your mash tun to the kettle? I'm guessing you do, if you don't you may want to get a 'thicker' tubing. The standard Home Depot stuff is fine (3/8th or whatever your spigot is) but I found that it warms up and bends a bit and sometimes causes my wort to stop draining. No biggie, just unkink it.
But for a few cents more you can get one that has a bigger outer diameter that won't bend under the heat of the wort.
Again, very small detail. Just something I wish I did when I started AG.
I'm guessing you have a digital thermometer. Being paranoid, I have two. The reason being changing mash temps by 15 degrees will change your beer. It won't ruin it, just change it. I brew with a friend and we both threw our thermometers in the water we were heating to start and they were 20 degrees off (150, and 130). No problem I have a candy thermometer I'll test with that, it's glass, I'm sure it's right. It read 170. Awesome....
So we boiled water (212 for sure) and then both digitals and the candy and synced up. Tested our water for the brew, 170. Um, ok... let 'er rip!
Anyways, just something to think about. Good luck!