Hi Paul
She looks great fella, I'm sure you will not be disappointed where did you get her from ?
Brake discs and pads if you stick with OEM and Lexus fit will cost you about the £850 mark give or take.
Obviously much cheaper if you buy elsewhere and spanner the job yourself, the pads are fairly dirty but it is a good setup in my opinion and for one not bothered by cleaning.
As regards water pump some do some don't once replaced it's a better design apparently but they don't fail just simply weep, had mine done at 30k it's 58 Plate car I've had it 14 months and car has been faultless.
You are obviously familiar with the marque so be prepared for a reliable ownership, there are various meets in the pipeline if you are interested matey, this is a good forum but can be a bit quirky at times but I have no idea who that label could be aimed at 😂
Big Rat