cgernaey, I also bought four standard libraries through Sweetwater. The one thing Sweetwater had to do with my order was confirm it first with VSL before the 23% discount, and the order, became official. That did take a couple extra days, given the time difference between Central USA and Austria. When I emailed VSL with my free library request, they responded very promptly.
Just to make sure, you do realize on anything that is available as a bundle, the discount offer is based on the standard individual library price, not the bundle price? The offer does not allow 23% off of a bundle price. Buying those four libraries on an individual basis, as you described it, should be fine.