We recommend aiming at a Dynamic Range of somewhere around 8dB (for streaming) to 6dB (for loud CD releases).
If you are delivering music for professional CD pressing, broadcasting or streaming, please use a dedicated metering and A/B listening tool, inserted after bx_masterdesk. You may even consider adding an additional Intersample Peak Limiter and Dithering plugin as the last stages of your mastering chain in these cases.
If all this sounds way too technical for you and you´re only producing music for fun (which is the BEST reason to produce music in our minds!) you can ignore all of this and instead just enjoy bx_masterdesk as your sole source of mastering technology.