My own childhood wasn't really normal so perhaps I'm biased, but I think what you're describing probably isn't that unusual for a kid who has some unhappiness in their life.

I too would dream of death, as did my sister. When we were in the 4-6 range I had dreamed of being shot and killed by men in suits, while she had told me one time that she dreamed a famous singer killed me. Those weren't the only dreams like those, but they're the ones that immediately come to mind.

The suicide thing I didn't have, but I did think of running away due to abuse and fighting in my household. I actually did run away one time, but it was only down the street to try to live at a friend's home However, when I was in grade 1&2 I often prayed for my parents to die because they had told my sister and I who our guardian would be in their will, and I wanted to live with that person. I even imagined sabotaging the brakes on the car so it would happen, though of course I had no idea how to even do such a thing. And it isn't that I didn't understand what death was, because I had known someone who died by that age.

I think young kids begin wondering about death in general around that age range, but for kids whose lives aren't terribly happy, the picture painted about what happens after death probably makes it sound like an attractive thing, rather than merely comforting. My guess is that what you described is fairly normal under the circumstances you've listed... though as I mentioned, I may be biased.