If it were me, here is the way I would handle a brake job. I have a very good, very reasonable mechanic who charges me about $60 per hour to work on stuff he can handle.
With a brake job, he can handle that fine.
I then go and find the parts, which I get at dealer cost. I bring them to him and I am usually out the door at 50% or less than Porsche dealer cost.
Obviously, I cannot do that on many Porsche repairs but when I can, I do.
I hope that helps somewhat.
Good luck''