My current thinking, if I were to upgrade my front brakes would be this:
https://www.awesomegti.com/shop-by-...-audi-ttrs-calipers-to-340-or-345mm-oe-discs/
I'd then source the cheapest, dirtiest calipers that I could and have them refurbished by someone trusted (as opposed to an eBay seller doing it quickly and cheaply to
help move them on).
Stick in some decent pads and you've got a very decent set up there for about a grand.
I would, however, like to see the kit in person and give it a good once over to ensure good pad to disc contact, adequate wheel clearance, etc.