This plant is a young plant probably about 3 or 4 years old. It looks like a Juniper, possibly a spruce, I am not too sure. It is in need of some serious pruning and would benefit from years in the ground to get some size to the trunk, unless you want a tiny tree. At the moment it looks like what it is , a bush.
To achieve what you are thinking about will take some years.
I hope you are not keeping this iside.