What two names do you suggest i use?

I wouldnt worry about it until you have the second baby. If you like Aaliyah, go with that and worry about #2 when the time comes. You could also just name the second girl (if you have another girl) a name that ends with the same sound "ah." Just for example, "Kayla" or "Jenna" or something. My kids are Jayden, Nolan, and Payton. We initially wanted all names that started with "J" but couldnt think of any more that we really liked, so we went for names that all ended in "n"