There is an aspect of your experience of death according to Buddhism that sounds exactly like quantum mechanics and actually seems rather like the narrow versus the broad path you refer to in #7.
The Tibetian Book of the Dead describes your day by day experience immediately after death. Each day sharp, bright lights of different colors, a different color on each day beginning with white, come to you from above and scare you. At the same time soft, fuzzy likes attract you from below.
It is explained that the sharp lights are coherent and the soft lights incoherent. Read narrow and broad to connect to Christianity. Read laser light and incandescent light to connect to physics. It is further explained that the bright lights are your wisdom and intellect radiating away for storage elsewhere whereas the soft lights are your not so fine emotions which in this hours of bewilderment give you solace.
You will not be saved if you follow the broad and soft lights. You have to have a narrow focus on the coherent sharp lights, like one-pointed meditation on a candle. [I would add that you must project your love into the sharp lights. The soft lights are your enemy. But this is not the time to love your enemy. You have to love your self]
But that is not enough in Buddhism to be saved. You must also at the same time appeal to god for salvation as well. You must knock on the door as stated in Matthew 7 and Luke 13 where the broad and narrow gates are discussed.
It helps to have someone praying for you, both friends and/or spiritual intermediaries. But basically in Buddhism you or your intermediataries must ask god in the aspect of the Lord of Great Compassion for salvation, and it will be given, if you are focussing on the narrow gate.
Now Buddhism came before Christianity, so the Buddhists did not identify that Lord in Christian terms. But we all know who the Lord of Great Compassion must be - right?
I think the synergism of Buddhism and Christian teaching is important. To me it says that what you do at the time of death is important- and both Christ and Buddhism say that. If you think you have earned salvation by either your good works or your beliefs, and that it will automatically come to you after death, you may be sadly mistaken. That is called self-righteousness. It is the meek, the humble who are not resting on their laurels, who are constantly seeking god even after death who will be rewarded- and it helps to know how to seek. Love your life, e satisfied with it, love your friends and your enemies, love the coherent light, the godly aspect of yourself, that will pass you through the narrow gate, and love god with all your heart, soul, and wisdom that you want to be with him.