Sounds like you are off to a good start.
My main suggestion would be to go with the Minion Method for preparing/lighting your charcoal. Fill the charcoal bowl half-full then put 1/2 of the wood chunks you plan to use on the charcoal. Now fill the bowl to the top with more charcoal and put the other 1/2 of the smoke wood chunks on top of that. Using a chimney starter, pref. Weber brand, light your charcoal. When lit pour the chimney starter onto the charcoal bowl and assemble your WSM.
Things I do/don't do (or at least before I got the guru):
I don't turn my butts (still don't). I don't baste them or anything. I'm not into removing the lid unless I absolutely must.
I do/did drop a thermometer through the dome vent to measure lid temp. Shooting for a cooking grate temp of ~225 I was happy with a dome temp of ~250.
I do have a probe (polder-style) thermo for tracking the meat temp - allowing me to monitor it without lifting the lid. Monitoring 1 of the 2 butts is good enough - pick the smaller one. I shoot for about 198-200, figuring even once removed and foiled for rest the internal temp may continue to rise a bit.
When the strike-point temp is hit I pull the butts and wrap 'em in foil and then store in a cooler for at least 1/2 hour, more likely 2 hours, before pulling them. I use neoprene gloves and just pull with my hands, discarding any large chunks of fat or whatnot. I tend to stack bark chunks to the side and then chop them up a bit to redistribute back into the mix.
I'm a sauce purist. Good BBQ doesn't need sauce. The only kind I use is classic E. NC style vinegar & pepper - search on this site for a thread about replicating Scott's BBQ sauce as that is the type I make (though I add black pepper as well as the red).
Lots of folks do things lots of different ways and what I say here is only how I do it - not meant to in any way imply that how others do it isn't also right.
Good luck and be sure to update us as to how things go. Like a friend of mine says, with BBQ you get to eat your mistakes!