Well that was a decent result, I would double check that power steering leak is on the rack and not the rubber feed pipes to the reservoir. I had an advisory a few years ago and it was the end of the rubber pipe at the reservoir end gone soft and leaking, new pipe from BMW sorted that and new stainless jubilee clips. Rear discs are not that expensive, Carparts4less usually come out cheapest with their discount codes, watch out for their brakes offer to come up + a set of new pads. Unlikely the handbrake shoes will need replacing but check out the backplates and the shoe retaining pins are not rusting away.