I got the Aquaero 5 Pro because it was cheap. $100 bucks brand new from Ebay. It's enough for my purpose. I know I really don't need a flowmeter, but I like gadgets/bling factor.

Are the EK PWM D5 pumps able to be controlled by the Aquaero 5 Pro? I was thinking that I should just stick to Aquacomputer D5 Pumps because I know that they have no issue being controlled through the 5 pro or 6 for that matter.
Is this the one you are talking about? EK-XTOP Revo Dual D5 PWM w/Serial Pump Top and mounting brackets.
The Airplex radiators tend to do best with low rpm is where they really shine. I can get more fans which is not a problem. I almost went with EK rads. I think is was that I value quiet over performance. I can always replace the Airplex rads with something else down the line especially if I upgrade to pascal gpus in the future if performance becomes a issue.
I'm going to get some fan slitters. Probably the modmytoy splitters with extra cables.
The motherboard PCie slots alternate as follows: 16x 3.0 slot, 4x 2.0 slot, 16x 3.0 slot, 4x 2.0 slot, 16x 3.0 slot, 16x 3.0 slot. Take a look at the link.
http://www.supermicro.com/products/moth ... X10SRA.cfm
I'm going to order a pcie 16x riser so that I don't have to mod a 780 to get rid of the secondary dvi port. That means that I should be able to fit all the cards and use a triple or at least a double parallel manifold. Triple would be ideal, but due to the pcie slot spacing that might not work. I'll have to double check.
It's not about access to motherboard ports. Those are easy to get to, plus it's not like I would need access all the time. Once the cables are connected that's it.
It's a great motherboard, but I guess in hindsight I should have been more careful with my selection. I can make it work, but my preference would be to use a manifold for a neater appearance.
I have the room for a STH10. I'm leaning towards that case since it looks like I will have this type of case for a long time. I can always drive up to LA to pick it up if I wanted to do that. Might as well get a case with plenty of room.
Damn fittings are expensive! What about Barrow? A lot of people use and like them.
Smicha I really do appreciate your help and suggestions. Thank you!