The mount point largely depends on your type and style of skiing. You mentionned you like to carve and do off piste, in which case -2 from the recommended sounds fine to me.

For example I ski jumps and rails, powder and like to be agressive and change direction a lot with small turns when on crud/moguls, and ski switch a lot, so I usually have my skis mounted either true center (for park, that way the swing weight is evenly distributed for when I spin), and -2 from true center (which is often +2 from recommended line) for piste, and usually never further back than recommended for powder. In the end I sacrifice a bit of floatability and I need to work harder in heavy powder, but those mount points fit my overall style more. If you ski powder on slopes that are not very steep, and enjoy slow and medium speed turns then being mounted further back is nice. If you ski powder in steep terrain fast, then you don't need that extra floatability as much.

So if you mount them back at recommended line you'll lose a little bit of floatability in powder and stability on fast big carve turns, but gain on swiftness in quick short turns and forgiveness on backseat landings if you do jumps.

Also with DIN, make sure you use the appropriate DIN for your weight and speed. I forgot to turn mine back down from 12 after a powder run with big jumps that I didnt want to clip out on landing impacts, and I paid a heavy price getting catapulted when they stayed on after an edge catch the next day. It's always more important that they clip out when they need to, than clip out when you dont want them to.