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@ghettro
The annoying thing about Campagnolo is that they have a lot of quirks, one being that the Potenza group is an orphan and the deraillers/shifters are only officially compatible with Potenza parts, which could be an issue in the future for spares.
One thing to ask is what do you actually want to achieve? The advantages of the 12 speed groupsets, apart from the extra gears is they have more options with lower gearing. Chorus 12 is also a bit lighter too. Occasionally you can find the whole groupset brand new at a discount as less people are buying mechanical rim brakes groupsets these days.
Alternately have you thought of Chorus 11 or Record 11? In particular the post-2015 models. Still lots of these floating around on eBay, parts availability is good and interchangeable between Chorus/Record/SR. These are even lighter than the 12 speed and on Ebay are not too expensive. They are a bit more limited in gearing choices though.