Wireless internet trought virtual box?

[NicksPfsense]

I have been wanting to do this for a long time when i found out about pfsense. I Do you think that my diagram is possible? I may want to add another wireless connection from a different neighbor later on. please help, i have come to the gurus because I have found nothing else.
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[doktornotor]

Uhm… The router should be in AP mode only. And I'd definitely discourage anyone from even thinking about using USB NICs.