Rene, The setup you are buying will sound amazing. Keep in mind that the PB-4000 is a big sub, depending on your room and size it should be nice. The stands you’ve mentioned don’t work as Lukas said on the PUCK or OREA are the best option. Keep in mind the monitors are heavy, if you want to make your own speaker stands, awesome!
Also, I got creative and I use fitness pads for my center channel so I don’t have any lobbing affect. They are inexpensive on amazon. I use them were needed and they do a great job.