I do not see any wavemaker listed in your equipment list. Also, why not get a Bubble Blaster pump instead of 2 x 1264? For my 422 tank, I am using the Starmex condenser chiller, 25 minute to chill from 26 degree to 25 degree and rest for around 2hr 30 min. If it rains, the chiller will rest for 3hrs or more. I am using a 1260 for return but will change to a Bubble Blaster soon as it consume less power than the Eheim. Guess the Eheim has been toppled by the Bubble Blaster series. As for lighting, why not go for Maxspect? Is the skimmer a confirmed purchase?