on these 4 and 2 piston calipers, used my larger channel-lock pliers with those rubber tips and used the old pads to push the pistons back into the calipers. works great.
as for bleeding the brakes, it's not necessary for just pad change but those miityvac replienish bottles work great long with their extractor pumps.
if you recently bled your brakes and doing a pad change, always a good idea to put towels around your reserve bottle. sometimes it will spill over if you dont pay attention.