i builded a cinewhoop:
-happymodel f4 12a aio
-old betafpv 1105 6000kv
-betafpv vtx up to 200mw 
-runcam nano2
-betafpv 95x frame
-xm+
-gemfan 2540

-dison design from thingi
-betafpv gopro 6 bec
-deceased hero6

i try differend lipos: 850mah3s to 450mah 3s

its loud and doesnt perform as i like at the moment. tune it is my plan. probably i will turn it into a pusher. 
i will probably step to my frankenstein whoop build, kk et125 frame and 2,8“ props. the frankenstein 2,8“build was my previous plan - props are ordered.
probably i will switch the naked gopro between them.

its somehow funny but im not so intressted in cinematic for pleasure, like buddies allredy do, i like to get some tiny money out of it,

That is too bad. You will get it tune and it will fly well for you.

i beleive i will stay a bit dissapointed about performence as it wont get into a performence settup :-) there was i time i swored i will never add an hd cam to my quad
but tuning should solve the flightstability for the hd footage

probably 4s would be better about stability, i have to decide after tuning. the happymodel board i used doesnt support 4s, the 2,8“ settup would do, time will tell