Generally speaking, I'm really impressed by the frame. It is such a clever and nice looking design... I also believe that it will be quite tough and vibration-free, but I need better weather to find out for sure :-). The intention is to run this on 5 or even 6s, but short hover inside on 4s showed that this thing might have tons of power even on 4s (and eat the battery for breakfast).

Putting it together was a bit tricky. I knew that I need very specific components to make them fit, yet I was caught by two things:

1. The CL Racing F7 controller has ESC connector and USB connector positioned in a way that you need to choose which one will be on the side, and which one will face front/rear. Since USB obviously should be on side, the ESC connector has to face either front or rear. Then you have quite a dillema. If it faces front, then you will have to route camera wires through the whole board, through space which is already crowded because of the VTx and its antenna - or you will have to face the fact that the pigtail hits the connector when positioned towards the read of the quad, pressing on the FC, transferring frame vibrations. I chose the rear facing position, and to mitigate the pigtail issue, I have mounted the pigtail outside of the frame (see pictures below). This makes most of the stiff part of the pigtail move out of the inside of the frame, more or less clearing the space needed for the ESC connector. Looking back, I would rotate the FC so the ESC connector faces front of the quad, which means I could skip the crazyness with the pigtail mounting (camera wires routed through the board would be definitely less of a pain).
2. Size of the Unify HV VTx. The official build video must be showing one of the smaller unify modules, because I've had really hard time to make the HV one fit so it doesn't touch the frame. I've had to remove the u.fl brace and its screws, and find a position where the white connector is not hitting the frame. It is literally millimetr on each side even after you find the right position. It would be much easier if there would be version without the connector, in which case the fitment would be much easier. Perhaps removing the connector is the best way to fit this VTx, or rotating it 90º (in which case it may start hiting pigtail, so I'm not really sure about this).

It is also worth mentioning that this FC + VTx combo is so tall that there's literally no space for nuts on top of it. Those would be pressing on the grommets too hard (should they be reasonably tightened), rendering the grommets inefficient, and even worse, transferring additional vibrations from the frame, as they would be touching the top plate. So using M3 o-rings seems to be much better solution. The o-rings are held in place by the top plate, so they are not going anywhere.

This is the thing used to mount the GPS. It is attached using custom-made short strap with a shoe-nail (having wife with a sewing machine comes handy :-)), combined with double sided tape. Double sided tape also holds the Hellgate buzzer in place.

Initially I've had some issues with the Immortal-T mount, as I haven't realized that the wires should be routed through the opening on top of it. Once I have figured that out, it worked beautifully.

My only reservation about this build is the XT60/cap holder. The connector slides out when disconnecting the battery a bit, so i will most likely glue it with CA (or replace it with another holder, or even mount the capacitor differently).