If I'm definitely going to be running it behind a window, would you suggest something different? and generally what kinds of specs should i aim for if i wanted to look into the 2 cameras at around $90 each idea?Yes, these OEM Dahua cams you are reviewing from @EMPIRETECANDY have software that you can view - I used it for awhile but eventually went to Blue Iris. You can also put an SD card in the cameras.
That camera you referenced has the best 4MP/sensor combination right now. Just be aware that behind a window running in color will greatly reduce the range at night. Provided you are ok with that, it is a great camera.