Spacing for new berry bushes...

In my food forest I basically have fruit tree guilds, 4 feet wide in 150 foot rows. Main tree in center, with a perennial at each 4 corners 2 feet away from the main tree. The south, west corner is to help block elements and sun scald in the Canadian winters from the snow. After each guild is a 15 foot span with a couple raspberry bushes. The goal is to allow it all to spread in the 4 foot wide rows as it all wishes.
So I got plants on sale. I have gooseberry,  aronia, and red and black currants. Looks like they all will grow to 5.5 to 6 feet tall and wide.
What would you do? Still put them 2 feet away from the center tree, or do I change the plan and place them 3 feet or even more away?

Sounds like some near plants!

I think either 2 or 3 feet would be find. I have some berry bushes and wild plants all up against my fruit trees, and they have done really well so far.

Thank you for your inputs.

Got them all in today. So happy, they filled all the empty corners!
Now to move over my nitrogen fixing trees. But first the annual vegetable garden needs me to finish planting it.