Skyactiv Water Pump difficulty

Hi guys, I have a 2013 4 door with 2.0L Skyactiv about 70K miles. I have some seeping around the water pump and ordered a new one from RockAuto along with a new stretch fit belt. I have yet to decide on coolant but I'm leaning towards Pentofrost A2 but might splurge on Motorcraft Specialty Green VC10.

Any gotcha's I should be aware of when doing the water pump? It seems pretty straight forward, just remove the pulley and then the pump, install new seals and slap the new pump on? I also ordered 4 new NGK plugs since this might as well be the 75K mile maintenance. Any other advice would be appreciated.

here is the coolant seepage
2014 Mazda3 S GT auto, 2008 MX5 6-speed
Well, how did it go? My son's 2012 2.0 3 needs plugs as well. We'll have to check for seepage while we're under the hood.