That is awesome! Thank you for posting your labeled setup. I'm getting some quotes to get mine pipe fitted but still thinking of doing it myself. How big is your heating space? I've got seven loops that I'll put on one zone in a 780sf space and wondering how much more my supplies are going to be. I think the manifolds are pricey and that'll drive up my cost.
Anyway, thanks again for posting that.
Thats a lot of loops, it can help you manage your Delta-T with that many loops, so that can be a good thing, but you may need to flow slower than you expect on your pump and your Ft of head is also lower.
I made my manifold from parts soldered together, but I did not add any kinda flow control to them since it's just one zone. But it was cheap, what you see pictured was around $300. You can do it that way if it's one big room, but I am going out of my comfort zone here and think you may need some of those small balancing valves to reduce flow rate since your runs are short and multiple.
Disclaimer.
* I am no professional, I'm just a cheap *** that wont pay anyone else if at all possible.