Kaylee is a nice name. If you are looking for a less popular name, kaylee would not be the way to go however. I work with children and kaylee is one of the most popular names. I know 20 kaylees. If you do not care about that, then go for it. I personally prefer brielle over breann, although they are both nice.
Carson tyler is a great name! I love both of those names.
Names are very subjective and there is always going to be someone who does not like your names. I like different names. My husband and I are also trying and I know most people will not like the names that I have picked out, but that is ok because we like them. Good luck!