The Kiba swords are already known to be formidable weapons due to their infusion with lightning style chakra. Combining them with the user's own lightning style chakra further enhances their sharpness and cutting ability.

If the swords were to also be infused with wind chakra and imbued with the user's own wind chakra, they would likely become even stronger. Wind chakra is known for its cutting and slicing capabilities, which would complement the lightning style's ability to enhance sharpness. The exact extent of the increase in strength would depend on factors such as the user's skill level and the amount of chakra they can channel, but it's safe to say that the Kiba swords would become even more deadly in the hands of a skilled user who can harness both lightning and wind chakra.

It's difficult to say for certain how much stronger the Kiba swords would become if they were infused with both lightning and wind chakra, as it would depend on a number of factors, including the user's skill level and the specific techniques used. However, given that combining the swords with the user's own lightning chakra already makes them exceptionally sharp, it's possible that adding wind chakra to the mix could result in a significant boost in power. Ultimately, it would require experimentation and practice to fully understand the potential of such a combination.