What beliefs would we consider reasonable for a self proclaimed Christian to hold?

[He lives]

Resources on Near-Death and Related Experiences

are available from the IANDS Store. Journal of Near-Death Studies The Journal of Near-Death Studies is the only peer-reviewed scholarly journal...........

Pro tip:  NEAR-death studies have nothing whatsoever to do with real, physical, permanent death.  The phenomenon known as a near-death experience appears to occur in a still-living brain in distress, possibly caused by hypoxia due to heart failure, and/or by release of assorted hormones in response to the crisis.

I believe that death is permanent and that there is no such thing as life after death and no such thing as a soul.

Don't believe me?  Then where does your "soul" go at night when you enter non-REM deep sleep?  If you can't even maintain awareness of your self when your brain is alive and healthy but producing low-frequency brain waves rather than the brain waves that normally accompany consciousness, what makes you think that you will be aware when your brain is completely dead?

Embrace your mortality.  Seek meaning in the real world, while you can.  Mourn the loss of your dead properly, rather than expecting to meet them again in heaven.  There is no escape.

I believe there is very good evidence that there is indeed a spirit (soul) that survives the death of the body. I was in audience with Dr. George Ritchie who wrote the books Return From Tomorrow, and My Life After Dying. He was  pronounced dead twice and ultimately was revived by an injection into the heart. He was chairman of the Department of Psychiatry of Towers Hospital; and founder and president of the Universal Youth Corps. There have been hundreds of books written about near death and out of body experiences. The research is ongoing.