Hi there,
Yea I was there 2 yrs ago on my first PCB, see the journey
The whole more I/O issue on that MCU bottom vs. B2B connector I like what I did on the S3 for more pins.Here
I’m still waiting on a SKU# to be able to buy the ESP32S3 Sense without the Camera and WITH the B2B connector soldered on there already.
as pictured , NO over heating camera gimmick in sight.
Hang in there…
HTH
GL 
PJ 