That sounds like a great combination. Wholecuts are even more formal that bals, but the perfing on the hastings brings it back down to a similar level as a standard cap-toe IMO. The fact that they are black comports with the formality of the suit, creating a coherent look. I personally love the contrast between a white shirt and navy suit, but realize that white is more of an "evening" choice if you will; very pale light blue shirt would be the SF standard especially for a daytime look. The wholecuts are more "evening out" to me however, so I think the white shirt is a good choice. Burgundy ties are excellent and would look great here. I'd just add that a white linen/cotton square in a TV fold in the suit jacket could really elevate the whole look as is looks really sharp with a white shirt.