Oh, addressing brake fluid... Take what you can out of the master cylinder before you start the project. Then fill it to the brim. Cap or plug the lines at the calipers/hoses and DO NOT let the master run dry. Fill the new calipers with a little funnel. Then purge what you can from the lines, connect to the new calipers and bleed the system. Do all four corners. Again DO NOT let the master go dry. Get air in the Antilock Brake Module and you'll have to have the system bled by a pro with a special scanner. This way you're getting new fluid with your new calipers.