I knew in advance that once the walls were opened up, we'd know
whether my grand plans for outlet, switch and can placement would pan
out or need to be modified.

We've lucked out on outlet and switch placement for the most part but
we've run into a problem with can placement. I've reached out to my KD
but she's super busy right now so I may not get an answer back in time
so I'm turning to you and the good folks on the kitchen forum forum.
Here's what we had planned:

The 4" cans laid out as planned but we didn't have that kind of luck
with the 6" cans. These cans are intended as path lighting/general
lighting.

The cans along the fridge wall (right side of drawing) could not be
moved to 39" OC from the wall as planned due to 3 sets of double joists
running top to bottom. We were shy of room by 1/4". ;-p I don't want to
go to 4" cans. We have 9' ceilings, it would not provide enough light
spread without adding more cans.

So we left one can in place - the one in the lower right corner near
fridge cab - and moved the one over the DW in line with it (top to
bottom).

The one by the oven wall is existing so that determined placement of the one near the cook top (top of page).

The 2 left ones, top and bottom on the drawing, are new. The
electrician put them 48" away from the cans to their right (the
recommended distance), which sounds good until he cut the holes and I
realized how close the top can is to the 4" can over the counter. They
nearly line up and only have about 24" between them.

We can move them over 3" at most before hitting a joist. Or we can
put them on the other side of the joist, which puts them beyond the
recommended 48" distance. However, when all the lights are on, that
placement would give us better overall coverage.
Here's a construction mode pic of the cans along the cook top wall:

I painted in the extra holes so as not to confuse you. The black
circles approximate where the cans might move to. The wire you see on
the wall is approx where the hood will be.

I think I want to move the cans over to the left but I'm not sure if
we should move them 3" to this side of the joist or move them to the
other side of the joist.

The other option that just occurred to me is to move them farther
from the wall so that they create more of a circle around the island
instead of a backwards C as they currently are.

Please help! I'm not sure what to do and I need to figure this out by
sometime tomorrow (sooner rather than later, it's the last day for
electrical rough-in).

TIA!!

x-post on kitchen forum.