The Wyze Outdoor adapter does not exist yet…
If the 2 cams are V3 cams you would be at or above the current output of the standard Wyze USB power supply which is 1000ma (1 Amp)
A V3 streaming video, spotlight, IR (manually ON), and Siren draws ~600ma. so 2 cameras running could hit 1200ma. but having everything going on both may not happen all the time.
I would recommend only 1 V3 per USB Wyze stock power supply.
On another note, I have 14 V3’s on a supply but not your typical setup…
Battery Backed-Up 14 V3 cams and Internet Communications