I have the clamp shell bearing splitter for the outer bearing. It's about $125, International Axle makes them. My buddy has one of those full Snap On puller sets and that what he used to remove it.
The spindles were riveted to the rotor and turned as one. That was the final finish. You don't have a balance problem but if you drilled off center then you're not going to be able to bolt on the rotor later- at least on that hole.