Best slice settings I found are:
Layer height: .25
Solid layers (top and bottom): 3
Best to use M2x14mm socket screws for motor mounts as it "sandwiches" the layers together making for an even stronger frame.
Camera adapter fits a 808 #16 keychain camera (with velcro). Then mount the adapter underneath the frame using 4x 2x8 Self tapping screws - Props aren't visible.