Well as the saying goes “fake it till you make it”
It turned out ok…I set the L/R cabinets as normal and measured the angled space between then set an angled cabinet to that width + 1″ to hide the voids. The void is still visible at the toekick but that can be covered easily. Turned cab countertops off and placed a separate counter over the whole assembly
If it were just angled cabs instead of a cooktop I suppose I would’ve used multiple angled cabs instead of just one wide cab, for appearance’ sake.