Liu Siyao sounds pretty good, Liu Junyi is more masculine, and the homophone of Liu Zixia is not good.
Liu Zixuan is quite meaningful, Liu Wenbo is more tacky, and Liu Junchi has a name that sounds like a car.
In addition, I have come up with a few references for you, male: Liu Junyou, Liu Hengyu, female: Liu Yaqian, Liu Xiaojing
Finally, for fun, the names of you and your wife combined form Liu HuX, for example Liu HulanO(∩_∩)O