Started looking into my dream hardware for this project,
it would probably be an AllWinner A13 based sbc with an embedded rtl8192cu on one of the usb bus and just a host connector on the other.  The reason I went with the RTL8192CU so far is because not many people like the allwinner network stack on the orange pi zero, also I like the low profile quad flat pack because I can solder it myself.
I was looking into STM32F7 and it only has 1 USB HS bus (and 1 FS bus) wile the A13 has 2 HS buses.
Also I wanted a USB based wifi stack because SDIO bus based stacks does not reach wifi speeds.
The other option being rocketchip with usb 3 as a future iteration