Peach tree succession planting

I'm planting some peach trees at the yarden.
The first one shares a hole with a blackberry bush, some comfrey and some onions.
As I was thinking about planting a second one, I rembered that peach trees don't live very long, in fact, I have a good shot of outlining then!
Now I'm wondering what to plant to eventually take their place.

An ideal plant should be relatively short, live longer than  peach trees do and produce fruit or nuts.
No elderberry, as the plants will be (intentionally)accessible to my neighbors kids.

With a sweet pit apricot, siberian apricot, or hardy almond, the trees will have longer lifespan, I could graft stone fruit to them, and a I could get a nut crop.
With hazelnut, I get a nut crop and a very,very long lived plant.

I have time to decide, obviously.
What would yall plant?

I am kind of in the same boat as you.  

I currently have a roughly three year old peach tree in the ground and I just placed a new tree this year in the ground.

I don't think the 10 year average life expectancy is a fast and hard rule as some people on this site have posted some beautiful older peach trees so that is something to think about.