I don't have any advice
but I can tell you that most people have different textures on their heads, from nature or by heat damage. I have both. My bangs are straight due to heat damage. I have 3 inches of curls coming in, but in the meantime, I simply pin back m bangs. It looks cute too since the side twisted bangs are in. the left side of my head also doesn't really curl. Some days the curls are better than the others. If you get a BKT the difference in textures won't get better, but you may find you're able to better manage your hair as I did. I LOVE the curlss on my righjt side, but my back is is more of a 3c, and after BKT the back is now simply wavy. Without a photo of what you're working with it's hard for anyone here to give you solid advice.