I would say Glaceon isn't worth the wait. Though Glaceon has a high sp. attack stat. It know more physical than special. Unless you transfer your Pokemon to ORAS and find a move tutar that know signal beam or water pulse. Your Glaceon is locked onto really 3 moves,
Glaceon will only be a helpful the dragon type elite 4. However, Her drudigon knows revenge and her noivern knows flamethrower.
I would honeslty prefer a mamoswine or a walrein so maybe you should get those. Glaceon is still a choice since it is tanky but its moovpool aint that good.