Ballistic, there is an awful lot more to this fine tuning lark that the things that you mention . Atmospheric pressure for one thing needed to be exactly right.
There is a book called The Improbable Planet written by an astrophysicist called Hugh Ross which describes how Earth got to be called The Goldilocks Planet.
It's very sciency ( technical term ) and much of it went over my head . However well worth a delve into if this interests you as the amount of fine tuning needed is mind blowing .
Jan from Tam