Maria Estella is gorgeous. I don't have a problem with both names ending in an "-a" sound. I think it's quite elegant. It reminds me of a name I heard once, Maristella, a combination of the two names. There's always
Maria Estelle, but that doesn't appeal to me as much as
Maria Estella.
Others you might like:
Maria GenevieveMaria ChristabelMaria VivienMaria RosamundMaria Evelyn Maria PenelopeMaria JessamineMaria JohannaMaria NataliaMaria DamarisMaria LoreleiMaria ClemenceMaria DemetriaMaria EleanoraMaria Eloise /
EloisaMaria ElenaMaria ElizaMaria EugenieMaria Celeste /
CelestineMaria GinevraMaria Callista /
Callisto
Do you like any?