Wow. You really gave me everything I could have asked for. The pictures, the breakdown, all of it was perfect. You made my job really easy, so thank you for that.
Here’s what I’d recommend. I would not use a Meridian 63 on this tank because the center brace is going to block part of the clusters. A better option would be using a Meridian 24 directly over each open section. You could go with a Meridian 11 over each section if you want to go minimal, that will still work. The 24s will definitely give you better results overall.
One of the advantages to using the 24s is that you can daisy chain all three together. We also have a dual panel control upgrade coming soon. It is a small hardware upgrade that lets you control both clusters on each 24 separately. So you would have six independent zones across your tank that you could adjust however you like. Brighter in the front, dimmer in the back, whatever you need.
I recommend positioning the lights front to back rather than side to side. That way, you can take full advantage of the dual panel control and it also happens to be the only way to daisy chain all three lights with the current port layout.
As for daisy chaining to a Meridian 63, here is how that works. Our largest power supply is 600 watts. The Meridian 63 uses 375 watts. That leaves you with 225 watts to work with. You could pair a Meridian 63 with a Meridian 35 and hit the 600 watt limit exactly. You could also pair it with a 24 or an 11. What you cannot do is add two 63 inch Edge Bars to a single 63. That setup would go over 600 watts. Technically it will still power on, but you would not be able to run the lights at full output since the power supply would max out.