I suggest you choose either Alexander or Xavier for a middle name and use the other for a first name. Combining those into one middle name is weird....
My son has an Alexavier in his class and I have heard it a few times in my area although I'm not a fan. It's seems like an odd smoosh name to me. I would pair it with a solid first name choice.
David Ian Carlos Daniel Edmund Emilio Eric Enrique Phillip Felip Felix Gabriel Hugo Ivan Joel Juan Leonardo Lucas Lorenzo Marc Manuel Nico Oscar Rafael Ramon Simon Sergio
Re: Baby boy first name
Lucas
Wyatt
David
Ian
Carlos
Daniel
Edmund
Emilio
Eric
Enrique
Phillip
Felip
Felix
Gabriel
Hugo
Ivan
Joel
Juan
Leonardo
Lucas
Lorenzo
Marc
Manuel
Nico
Oscar
Rafael
Ramon
Simon
Sergio