a male creator god creates the world independent of any female counterpart... e.g., jehova, yahwe, the christian father god

Not all Christians accept this view. Some assert that God has a "mother" others a counterpart/sibling. Others simply have no gender association when it comes to God (in the Torah, G-d is described using many sorts of words, some of which have a feminine grammatical form).

a chosen people who are selected by the father god to represent him and to live by his laws and rules

Wait... Christians believe that there are such people, and they're the Israelites. Christians on the other hand are self-selected, not selected by God, and can be anyone as long as they follow Jesus' teachings.

a messiah or savior who is sent by the father god to instruct the world and particularly to instruct and assist his chosen people

Again, not chosen people, but more or less some version of Jesus as Messiah is nearly universal to Christianity. There are some odd sects here and there that see Jesus only as a great teacher, but they're definitely many sigmas outside the mainstream.

a day of judgement or the apocalypse which is the moment when the world is judged because it does not live up to the rules that have been dictated by the off planet father god

Not at all universal to Christianity. There's way too much specificity, here. Certainly there is a universal concept in Abrahamic faiths that there will come a time when God rewards the faithful directly after judging everyone who ever lived, but the idea of that being "because [we do] not live up to the rules..." is not universal at all. There's also a varying degree to which Christians see the judgement as a physical/temporal event rather than a personal/spiritual one.

It's my current view that these four elements constitute the core basis of what it means to be a christian

I would say that this defines what it is to be Christian in a universal way:

• A monotheist deity who is almost always the creator as well
• Jesus as savior and teacher (usually Messiah)
• An adherence to the teachings of Jesus

That's pretty much it. Everything else varies from the creator-as-demiurge of the Gnostic Christians to the Sophia-as-aspect-of-God fringes of the Orthodox world, to the veneration of saints as near-divine (sometimes thin veneers over deities of local pre-Christian cultures in some parts of the world), etc. Christianity is a very diverse group. Some believe in a literal heaven. Others do not. It's complicated.