For some other readers with possible tips for the available options I think it would be useful to define what you mean by visible light as this might be understood as visibly illuminating the area with reddish light. For instance the cheap ones I got do not emit light in a way you could see the light itself but the LED lights themselves can be clearly seen as an array for small red leds. I would doubt the neighbours minding or noticing them if directed in a suitable angle. Visible or not, you’d probably not want to point the lights at the neighbours direction anyway…
I think this is a bit of a twofold issue. On one hand you might want the cameras and lights to be as stealth as possible but on the other they might also act as a deterrent to give a hint the potential unwanted visitors are being monitored.
I don’t know the kind of environment your house in Spain. But if it’s the type my late grandparents owned, a villa in the rural area near a small town, you would probably rather want some kind of a deterrent rather than catching the burglars on video while trying to break in. My grandparents villa got robbed 3 times during the 10-20 years they lived there (but this was in the 80’s). After they got two guard dogs (which the neighbours took care of while they were visiting Finland during the summer when it was the hottest there) the place was not robbed again.