Couple things. Yes, correctly installed as Edan designed the kit bleeders will point down. It was not too difficult to bleed them, as Edan stated.
For the pistons, as with the 240sx calipers I'd recommend you visit your local parts store and purchase a tool to do this with. The one I have is square and has pins on all sides for various applications and a 3/8" drive-makes piston retracting simple, quick and much easier than the way I was doing it [don't ask...].