I used motion pro lite locks, the wheels are easy to balance with these, the rear is 1.5 oz and the fronts 1 oz, put that much spoke wieght or stick on wieght straight acrossed from them. I put old stick on wieghts on the inside of the rim under the rim strip with lotsa silicone on mine so theres no way they can come off and they're outa sight.
The fronts 1.6 inch.
The rears 2.15 inch.
Theres lots of good tubes all the major brands are fine, aviod thin tubes get a heavy duty one, brands not important tube thickness is.
I've had good luck with every tube I've bought or came in a bike I've bought, I've run kendas, maxxis, bridgestone, irc and vee rubber.