Do the No-Sag Pockets work as weight integration pockets? Yes, the rear zippered are where you can insert the weights. And they do have a dump handle hidden underneath so you can just yank and drop
Do the tank cam bands come with the IQ system? If you order from your LDS, definitely. If you order from Online source...possibly not.
Do you need the STA if you get the SS BP? No, the tank cam bands will work with the IQ pack and the SS BP just fine without the STA. One trick is to use a zip tie throught he holes in the harness system, the BP, and the wing to keep it all "steady" as you mount it all to your tank.
And though others have mentioned getting your IQ system from online sources. This I do not recommend since there are several little details and variables that can best be handled by your LDS. The online sources might not get these right resulting in a few customer service phone calls to folks who are not familiar with this system.