Just don't let the resovior starve otherwise you'll be starting over. The first time I bled my RCS it was mint, I was doing something else on the bike and let the res tip over (didn't have enough hands) and rebled it but it wasn't as good since.

One trick I found is hang onto an old bottle. If you've got fully flushed fluid in your system there's no point dumping it when bleeding, bled it into the spare bottle and recycle it, that way you can spend ages bleeding into it without wasting expensive race fluid.