DISCLAIMER:

this is a really slim build, so you gotta watch the size of components, there is basically no way you will fit 2 25,5x25,5mm boards in there and you need a 3d printer and the fitting hardware in order to get the frame assembled.

Download the 3d printable parts:

https://www.thingiverse.com/thing:4494156

Watch out, this is a really slim build, so you gotta watch the size of components, there is basically no way you will fit 2 25,5x25,5mm boards in there 

My recommended build:

FC+ESC:https://www.banggood.com/custlink/KDDyEQoA90
Motors:https://www.banggood.com/custlink/vv3YyQabeI
VTX:https://www.banggood.com/custlink/mvvYRAabo9
FPV Cam:https://www.banggood.com/custlink/K3vddNjQaN
Reciver Frsky:https://www.banggood.com/custlink/DDKhyQlQNW
Reciver Flysky:https://www.banggood.com/custlink/mv3ERQLnA8
Battery 2S:https://www.banggood.com/custlink/vDvYhAOn0M
Battery 3S:https://www.banggood.com/custlink/vmvdYNLbb3