One shirt made for this outfit is a white cotton bib-front shirt with black buttons and cuffs for cufflinks. It looks different from a day shirt and sits naturally with a bow tie, so keep it for black tie and other evening occasions.
The bow tie should be black, ideally silk and self-tied. A self-tied bow has a slight asymmetry and softness, so it never looks like a stiff ready-made accessory. If you are tying one for the first time, practise the knot a few days beforehand. Match its width to your face and collar: too narrow and it disappears, too wide and it overwhelms.
What about a necktie? Not in classic black tie, because a necktie belongs to day and business dress. With “black tie optional” you can consider one, but the outfit then becomes a step less formal. If you want to stay within the evening convention, choose the bow tie.
Mind the collar too. A classic or kent collar without too wide a spread works best with a bow tie, so the bow does not get lost between the collar points. The top button stays fastened all evening, even when the room gets warm.