Hey @Merlls_Rizzini - If you’re still looking for this, I just released a plugin that allows a site to install all the pro icons, which should make this process a little easier.
There’s still a little work to do as you still need to figure out which icons you want to swap, and write a theme component to use the new icons (see the section about replacing the default icons from this howto for details - currently there’s still no way to replace all the icons with a different style (eg, replacing solid for light), but it hopefully makes it easier to do customizations like this.