I like it too. =]

Well... lol... this one came out... a "mixed bag". I guess it would only be proper to tell you in Dave_C's comment section that what I ended up doing was using the frame from the ARS-5 and the canopy from the ARX-R in order to get what I personally needed out of this build. The result is magnificent despite the costs being comparatively minimal.
https://rotorbuilds.com/build/18617

Since BF4.0 I keep them stock on 100% of my builds. To avoid burning a motor now while testing/tuning reducing D term substanstially should help. The motors get hot because they can't keep up withe the quick variations of the input. But I doubt the tune is the root cause of the issue and not something mechanical?

Hmmm... Mechanical. What are you thinking? Overloaded props? I'm running V1S 4.8 on 2204 Hyperlites. 25A Mamba MK2 stack.

Hmm .... Does the frame feel stiff enough? What material and infill? A frame that is too soft and wobbly could lead to those hot motors. But there are probably a dozen other possible reasons. Are the components new and un-damaged?
The prop. pitch is too high yes but that shouldn't be that much of an issue.

Ummm. I do not know if it is stiff enough. It is PLA, but TBH, I don't know the infill... some cat at work printed it up for me. It feels stiff, but maybe I am just hopeful. I haven't got to reduce D (and fly it). Still monsoon season here apparently.
Edit: I spoke to Hyperdrone and they said that the 2204 2722 should be able to handle that load of prop on that ESC no problem. I trust their word on that. I'm thinking it is maybe not as rigid as it needs to be.

unfortunately I can't measure it right now I am on a business trip all week.
I did not use the standard nylon spacers but instead two long nylon screws and some nylon washers to get the stack lower.
There is room to gain a few mm. So if the spec sais 19mm and you don't use the standart mounts it should be doable to get below 20mm... No garanty that I am right though...

Thank you! I think it should be doable. Worst case I just use my own standoffs.

I use a FrSky X7 with some upgrades like hall gimbals. I can recommend that one and the x-lite. My googles can record the video feed on an SD card. There are also some VTX that can record. AKK makes one for example...

Thank you!

Honestly re-mounting is the only flaw this design still has because ou have to solder the motor wires again...Havent tried PloyMax yet but after spending way to much money on pricy exotic filaments I will give regular old PLA a try now :-D

I thought the stack is moved to a new frame on the bottom plate, no need to solder. At least it looked like it.
PolyMax will definitely increase the strength and it's not brittle. I am getting interested. Thanks! 👍

Bottom plate and arms are one piece. Thanks for the recommendation! Watched a few youtube videos about PolyMax...I think I will have to try that too :-D

The frame holds up ok. One broke when I flew head first into a tree trunk. A 3D printed frame can't really compete with carbon in terms of durability. But on the other hand it costs hardly anything to print it...

Very nice. It'd be unrealistic to assume any fully 3D printed frame would hold up to a big crash. But its awesome if it holds up to minor bumps and bruises.

Totally agree. If I tried to design it to survive big crashes it would just turn out really heavy and fly like crap. The usual small crahes are not a problem and thats good enough in my opinion...