So Koolego I have been using separates in my main theater and a receiver in the mancave. Since the equipment you have now is zip maybe figure out where your seating and speakers will be located to get the proper setup for atmos 7.2.4. You can download the specs from dolby online. In my main theater I decided to use active speakers as you can see in my signature. This way you don't need amplifiers or a receiver. You can take a look at what they use in the studios, JBL, Dynaudio, Focal, Yamaha, Genelec, etc. If you are shopping for amplifiers I would make sure to check out Parasound and Sunfire. If you are on a budget you can also find good deals on amps from JBL Synthesis in the pre-owned market. For some reason this brand for custom installs flies under the radar and deals can be found.