My second TBS Source One, built as a freestyle rig initially, but slowly converted into a mid/long-range cruiser. Runs on 5S, really love the quality of these TBS frames, very tough and nicely manufactured. I slammed this build using 25mm standoffs as well.
I've also designed a LOT of Source One 3D-printed parts, please check out my Thingiverse page.
This build looks awesome. Can you link to the STL for the camera mount?