Thanks I am new to networking. What model Nanostation is working for you ? Could you tell me what specs I need for the the switch, or could you recommend a least-cost one that should work well?A possible solution would be to purchase a wifi access point such and a ubiquiti nanostation and get a cheap network switch.
Build a new network without internet access. - show network
Connect the fpp rpi to the switch, the nanostation to the switch - connect the ESPixelSticks to the wifi of the nanostation.
You can either connect the pc as needed to the show network, or configure the wifi of the rpi to connect to the cable router wifi (this will allow you to upload sequences to the rpi from the normal network)
If you then allowed routing on fpp you could potentially route to the other devices from you pc, but my normal approach to all this stuff, is do one step, test, refine. Don’t try to do it all at once as it is too hard to debug.