You should be able to fill the caliper with brake fluid simply by gravity bleeding it. Just make sure that the MC is full of fluid, then open the bleeder with a pan or something under it to catch the fluid. with the cap off the MC, don't touch the pedal, just let it sit with the bleeder open for a few minutes. Pretty soon fluid will start dripping into your pan.
Yep bleed everything.. had the caliper off a couple of times. .the last time I made sure the cylinders were completely pushed back. Seemed to bleed fine after that. I suppose the first 2 times I didn't have the cylinders all the way in and there was a little air in there.