To those of you who might still be wanting me to provide a grounding for my first three assumptions, here's something I worked out a while back. As I mentioned before, I am a very linear thinker. (It's practically evolutionary - one small step at a time.) 
First, we start off with the idea that children are predisposed to believe in God. We are not born atheists as the New Atheists like to claim. Here's evidence for that:
www.telegraph.co.uk/news/religion/3512686/Children-are-born-believers-in-God-academic-claims.html
So that's our stating point. There is enough evidence for design in the natural world that it is at least reasonable to conclude that a Designer might exist. But can we know anything about Him/Her/Them?
STEP #1: The truth about God can be known. (To claim it cannot is to make a truth-claim about God and is thus self-refuting.)
But what role does empirical science play in providing evidence for such a being?
STEP #2: The existence of God cannot be either proved or disproved using the scientific method (because it limits itself to studying only natural phenomena and has no access to a supernatural entity such as God).
But if a Creator/Creators really made the universe, shouldn't we be able to see evidence of Him/Her/Them?
STEP #3: However, if a God (or gods) exist which can periodically interact with the natural world, we could study such points of interaction.
But can we PROVE such a Creator exists using science? What role does faith play?
STEP #4: The scientific method itself does not (and cannot) provide absolute proof for anything. Therefore all worldviews, whether theistic or atheistic, must rely on faith based on evidence which is apprehended through our five senses.
What evidence for a Creator do we find?
STEP #5: At least three lines of argument supported by such evidence - the Kalam Cosmological Argument (the beginning of time, space and matter) the fine-tuning of the universe and the information encoded in DNA - seem to demand the existence of an intelligent designer (or designers).
See details on this evidence here:
Why not many gods?
STEP #6: The Principle of Parsimony (Occam's Razor) indicates that only one God is necessary to explain the aforementioned features of the universe (effectively ruling out the gods of Hinduism and other false gods).
But what is this God like?
STEP #7: The Moral Argument (the existence of objective morality) dictates that this Intelligent Designer must be personal, moral, loving and just.
But which of the many gods of history fits the evidence best?
STEP #8: The Judaeo-Christian God of the Bible is the only proposed God who seems to fit the observable evidence best.
How would we find out more about this God?
STEP #9: The Bible appears to be the only accurate, reliable and historically-verifiable account of God's interactions with His creation. The Bible tells us about Jesus Christ.
But who is this Jesus person and why should we trust anything he says?
STEP #10: Jesus Christ appears to be exactly whom He claimed to be - an accurate representation of God manifest in the flesh (John 14:9).
What evidence did Jesus provide?
STEP #11. Jesus gave us evidence of His claim to divinity by taking the punishment for our sins, dying on the cross and rising from the dead on the third day.
Now that we know God exists, what should we do about it?
STEP #12. Thus, we have logical and rational grounds for putting our faith in Jesus Christ and following His command to repent of our sins and enter into a relationship with Him.
There you have it. A 12-Step program for those who need to kick the habit of atheism and turn their lives around. I realize it won't convince you but rational arguments rarely convince everyone. This is a heart issue, not an evidential one. You might have had dozens of good solid, logical reasons why you married your spouse but ultimately it came down to an emotional choice - and of course to LOVE. 