I've been researching the best brake setup for my BRZ and come to the same conclusion as advice I've received from various others: I don't need a BBK, the stock brakes are plenty fine for my road-only driving. I then set about looking for the best brake pads I can find and have been advised that PFC Z front pads and Cosworth Streetmaster rears offer the best balance for fast road use. They're on order and I'll fit them when I have all the parts. I don't need new discs just yet and have time to research them when they finally need replacement.
Meanwhile, it's tyres for winter use time again. I'm going to use my old Rota 17" wheels and buy another set of Goodyear Vector 4Seasons 225/45 as the last set I used were excellent for general winter use and getting through the snow in my lane.
When it's spring, I'll then buy a set of 235/40 Michelin Pilot Sport 4 for my 18" XXR wheels. I'll also take the chance to transfer the TPMS sensors from my winter to my summer wheels.