Thanks for everyone's responses on my noob questions. Here's what I decided on. I decided to go this way for the following reasons. They may not make sense to others, but they make sense to me.
To minimize space usage in my "Fish Room", maximize space actually used by clownpairs, minimize the number of tanks, and I like the thicker glass. I cracked a few of my 10g tanks. In my experience, the smaller clowns I want to focus on waste most of the 10G tank footprint. Mine stay around 8" around their pot except to eat at the surface. I can fit my 40G breeder in the same spot at 4 10G tanks were before with room for a 10G to spare. 36" wide instead of 48" inches for the 10's. I will keep my 15G clown bloodstock tank going for a QT. No sense risking anything!
Tank: 40G breeder split up into 5 compartments - Note to all, I wouldn't recommend doing this unless you can squeeze a caulking gun in here better than I. Maybe a bunch of squeeze tubes would have been easier. I struggled aiming the tip of the caulking gun. Also when getting glass dividers. Be smart and tape them off BEFORE you put them in the tank. The tape will help keep the silicone nice and neat. I struggled on the first floor trying to tape neatly with the divider hot glued into the tank for stability. Also, hot glue works AWESOME when trying to secure a divider. Dries in seconds, and from what I hear, it's reef safe - it's simply melted and cooled plastic, not actual glue. I started with 3/16" black acrylic and wanted to do teeth and have 1 return, and 1 drain, but I decided that wasn't for me, and I think ultimately my acrylic would have bowed. Waste of $120, but good learning experience I guess.
Sump: 40G SUMP from a local board - . This is my first sump. I have some live rock to put in here. It depends on how much room I really have in there. I will ask some specific questions around configuration.
Skimmer: Reef Octopus NWB 150
Heaters: Various titanium heaters - controlled by a ranco unit.
Return Pump: EHEIM 1262
Plumbing: Drain: 1" bulkheads to solid 1" return line.My plan is to hard plumb the tank so I can seal everything off. I was thinking of putting durso's on each compartment to minimize noise and it will help on space since I'll be plumbing to the rear of the tank.
Return: 3/4" with globe valves for each tank - was planning on plumbing the return back into the sump to avoid backpressure on the pump. Is this necessary if I put a ball valve and an outlet right close to the pump returning it back into the sump. I heard the continuous flow is better.
UV sterilizer - I'm considering one of these as I map out the plumbing. Not sure if it's imperative for brood stock. I heard it was for growout.
Lighting : fluorescent home depot special
Tank with 1/4" glass dividers painted with Krylon fusion. A couple are slightly crooked, but hey it was my first rodeo! Use two wooden guides next time I guess.
Sump - Ugly isn't it. You can see themnants of my original return line. I saved it because I knew I'd be at this again.
This is someone else's sketchup. This is what I want to do for my drains - ignore the internal overflows.