This is not a question that you can answer without being one-sided. So you have to decide for you self. Here's some information about the two names to help you out;
Lucia;
Meaning and History;
Popularity;
Alena;
Meaning and History;
Popularity;
That's all I could find, hope this helps.
Alena McConaughey's birth name is Alena Kunis.
Alena Kotoucova's birth name is Alena Roknicova.
Alena Sibil's birth name is Alena Sibilov.
Alena Savostikova's birth name is Alena Alexandria Savostikova.
Well i think ava is a better name but you can think lucia if you want i hope i answered the question.
Alena Torganova's birth name is Elena Vladimirovna Torganova.
Alena Murray's birth name is Violet May Murray.
Alena Vinnitskaya's birth name is Olga Viktorovna Vinnitskaya.
Personally i think the name Amanda is better, but its up to you which one you chose :) hope i helped
There is a Saint Alena but no Saint Aleena. Perhaps the name derives from Alena.
Lucia Popp's birth name is Lucia Poppov.
Lucia Altieri's birth name is Lucia Nasillo.