As Angry may remember I fit a Black Ice Micro in my Reflexion using a Zalman 80x15 mm fan attached internally via the stock heat pipe mount holes.
Worked great. Temps were much better than air for sure.
To me setting a singular goal is key as mentioned before. That determines your order of importance. With a SFF PC I'd suggest to first determine wether all internal or wether or not to go partially external first. Helps in figuring out which parts to use. I've always found that when building something you can always find something that fits if clever enough to figure out how to use it properly.
BTW- nice to be back watercooling again AA

I missed it. I have a new rig cookin'