Hi there,
Yes, Sounds like a good plan, if the polling doesn’t bother you, then just mock up a test code set to and START there. The S3 has good WiFi and BLE. You would use the Nrf52 or MG24 sense versions for the Imu’s. BLE the data from each Peripheral to a Central then WiFi it or write it to the SD. (look at @msfujino thread) for collecting data and writing it to SD until Central connects and downloads it from the peripheral. A variation on that theme sounds to me is what you want.
BLE would be better for batteries compared to the WiFi power draw.
if distance is great you may need some Coded-PHY (2mbit), or Nimble for Long-Range Bluetooth. Nrf supports it, can’t say about the MG24 Lib’s.
Lowest power will be NRF’s as peripherals (using sleep) longest battery life.
Sounds like a distance issue too, why not BLE?
You can connect multiple peripherals. to one central and all the data is there, no messing around with routers , ap 's and the worst word invented…
### Proprietary ### no thanks! , really they just didn’t want to pay the licence fee…LOL is what that means.
FYI, they all have them, Nordic is “scatter” or something,espressif is ESPnow, and there are others…
Don’t do that!
here is a screen shot of THREE at once connected using the dongle and two Xiao’s and one DK board.
Don’t make it so complicated. IMO.
HTH
GL 
PJ 
How about 20 to one…
