I might hold up on the pro seal order as it is a date sensitive product and it will be a bit before you need goo. Nothing more is really needed from Van's but you are going to be buying some tools you never thought of and that will save you time and headaches. One last thing to start considering is your wiring method as you might possibly need to drill wing ribs shortly to run wiring in the wings down the road (per Van's service bulletin).
Vlad, that statement almost makes it sound like you used those rivets extensively on your bottom wing skins. True? I've heard some say that theoretically you could pop-rivet the entire bottom wing skins on with those but never knew anyone actually did it. Of course, a couple hundred wouldn't be nearly enough for an entire wing skin, let alone two.
Just curious, where'd you use them and how are they holding up?