Alright to set up a macro for a x7 mouse I would check their website to see if they have any scripts available. Usually you can download one directly on the website/ forum. Depending on how it works I would reccomend a speed for 35-45 Clicks per millisecond for a Para.
The mods would either be: Spetz Barrel and Ergo Grip OR Long Range Barrel and Ergo Grip. Do not use any other mods, these are the best for the Para.