I haven't done any of my 2015, but 3 times at least for older mk4-5. Definitively, if you are handy and have done a timing belt or suspension work (multiple steps, careful work) then you can tackle this yourself.
A shop will always be expensive, but most importantly, in this economy with labor shortages you don't want a shop to rush your job, or guess.
Remember, this 6M gearbox is not new, it is the same fitted from 2009 cars up, so lots of people have already changed clutch and DMF on these. Procedure is very similar to a 5spd from what I read.
You need a set of triple square bits that includes a long one of the correct size (forget which one), this is a very nice set:
10 piece Triple Square Set by Metalnerd. This kit is specifically designed for your European automobile. We include all 9 known sizes of triple square bit (M4, M5, M6, M8, M10, M12, M14, M16 and M1...
www.idparts.com
Then the clutch itself, I believe I've read there is Sachs and LuK from factory and they do not mix, so my plan is to change everything to LuK using:
* LuK RepSet 02-057 Clutch Kit
* LuK DMF123 Dual Mass Flywheel
Good luck.