Congrats! Great call on the white, close to mine except I have a small blue stripe.
Welcome to the 211 club. I have about 160 hours on mine with lots of different riders, skiers and a couple footers plus a gasp,,, brief period of tubing (did I really admit that). I have changed lots of things in my stereo and ballast system. Best change I made was moving the sub from the passenger's side to the drivers footwell. I am in the process of building a base for the rear jumpseat, it will house a 12" sub.
Once you start riding with the tanks filled try riding with the front tank at 3/4 before adding any additional weight. I have found the 211 tends to run a little light in the rear.