First, welcome to CHR even though you've been around a while! That's a good question, and I look forward to the answers from others who've done this more than me. Maybe I should have, but when I did mine I didn't bench bleed the MC first, and in fact did not even think about taking it off the car to bench bleed. My MC is frame mounted, and I just filled it up and hand pumped the brake, adding fluid to keep it full. Once it quit dropping I loosened the RR bleeder, put a piece of small ID rubber hose over the end of the bleeder, hanging into a clear bottle with enough fluid in the bottle to cover the end of the hose. Hand pumped until that one quit blowing bubbles, and moved to LR, then to RF and ended with LF. May not have been right, but it worked for me.