Building an all in one pentest tool with wio terminal (arduino)

After years out of the IT industry I am making a career change into cyber security. I am giving myself a project to code an arduino board so I can select a variety of attacks such as a HID keystroke injection tool, a deauther and handshake capture tool etc. I’m stumbling at the first hurdle and trying to figure out if my hardware choice is cable of traditional monitor mode and packet injection as you would use in Kali. The wifi chip is a RTL8720DN. I’ve looked over the documentation and all i’ve seen is low power beacon listen mode which I am assuming is to do with bluetooth rather than wifi.
Any help or advice is appreciated.