Hermann, Hickory is likely to overpower both white oak and maple. Cherry or Black Walnut would be a better choice, but really, hickory is best suited for heavier woods; ipé, massaranduba, osage.
backing lighterwoods is ideally done with, indeed, a lighter wood aswell. Maple and Ash give excelent backings for these woods.
But, why back white oak? as it's very tension strong already. It's smart to back Cherry, B.Walnut, as they're tension weak, but not white oak.
Nick