Just be aware that when you take the rear discs off, you may find that the handbrake shoes, (which operate against the inside of the disc hub), may need to be replaced.
Not a difficult job, but getting the shoe retaining springs to seat correctly onto the hub and reassembling it all can be fiddly and time consuming, so allow plenty of time.
Not a difficult job, but getting the shoe retaining springs to seat correctly onto the hub and reassembling it all can be fiddly and time consuming, so allow plenty of time.