I've always preferred to by these cheaper needing the belts doing, and paying for it to be done by a specialist that i trust. Luckily, one of the best is local to me in Nottingham though. So many have had belts done on the cheap nowadays and had issues later down the line because of it.
Belts and dephaser is about £600 from memory, but last 5 years. Its not stupid money if you plan on keeping the car for a while. Plus using a proper specialist, they'll normally find issues while working on the car. I've always been advised against doing the water pump unless it's leaking or isn't moving as it should when checked. It's not a common issue on these, and i believe it's driven on the Aux belt, so not as big a deal is it does fail. Never had an issue with a leaky cam cover either. had 4 now and never changed the seals.
I would also recommend getting the gearbox oil changed on a new purchase unless proof is there though, as these do leak and can run low and fail.
182 orange is inferno Orange, similar numbers to Racing blue 182's. The Flame Red only came in 172's both ph1 and ph2 though.
A lot of the time with these, people advertise the belts has being done, but when you dig into the details, what they basically mean is they have a receipt from 4+ years ago, or there mate did it who is a mechanic. Either way i'd factor a belt change to be safe in these circumstances unless prove of a decent specialist has done the job. It's worth noting that the Aux belt needs doing every 3 years too, which gets forgotten a lot of the time and when these go 9 times out of 10 they take the timing belt with them.
In regards to Brake pads, i ran standard Brembo Pads in the front, with braided hoses and high temp fluid at Donington Park on a Track day in November, granted conditions were cooler than this summer. But i managed up to 10 laps at one point before i felt brake fade. I'd been taking it steady throughout the day only doing 3-4 fast laps followed by a cooling lap to preserve them. I'd say unless you're doing lots of track time in it, just run standard pads on the front too, with better hoses and fluid. Could always run a proper track pad for track days and switch back to road pads for road use if you felt it was required.