Stunned and amazed, particularly at CASA's advice.
The rules are very clear about what constitutes VMC and IMC and day or night is not part of it. Likewise daylight and darkness is well defined and eclipses don't figure in it.
This, however, is a perfect example of what one of my instructors taught me years ago 'now you have worked out the flight is legal, is it a good idea?' That's what captaincy is all about. If you think conditions will exceed your capability don't go.