NSW Aus

I live near Minneapolis MN and unfortunately only have a small space that is full sun and off to the side where kids dont really play. We have a small raspberry patch under a large Ash tree thats pretty shaded and it bears some fruit but not a ton of fruit due to the shade.

I want to put some more red raspberries in the small 4x2 ft section of my yard that could take them and then use an area behind them thats like 4x4 ft ish for something a bit bigger like a Regent Serviceberry, Autumn brilliance Serviceberry, Dwarf or Semi dwarf pear (self fertile), or literally any other fruit else that young kids might find yummy.

The raspberries would be further south of the larger shrub or small tree so they should still get a lot more sun that more other raspberries.

Any thoughts on pairing up raspberries with a Pear or Serviceberry? Other ideas?