This is my 2nd build from scratch and definitely one of the most challenging. The low profile makes it extremely hard to fit everything. I recommend not using a 4n1 esc on this frame ever lol. currently running the micro sparrow 2 but soon will be installing the predator mini pro. Also a mach2 from rdq does fit nicely but I do recommend the ufl just because the tbs pig tail rear plate is nicer imo. Great quad so far. Never thought this size quad could feel so small/balanced in the air.
Update: pred mini is in and love the color combo!
Update 6-20-18: Finally 100% complete! Stuck with the 4in1 esc but looks great either way.