Elemental, Construct, Automaton, Robot... all just words (correct or not) for the same thing; a physical container for your Magus' lifeforce, his hopes and his never-to-be-fulfilled dreams 8) I like the concept of the character very much. New to Ars or not, in my understanding of the game, you have hit the 'mood' spot on!
+1 
I like the concept a lot as well. Sounds like the perfect obsession for a magus!!
Xavi