Name: Sandy B. Ford River Twp, Michigan UP (Zone 4b) (Zone 4b-maybe 5a)
Robyn, I think you can fit 4 more plants in there (you're thinking just the one row, right?). And yes, plant them in the spring. I hope your transplanted one does okay... but if not, you'll have room for 5 plants .
“Think occasionally of the suffering of which you spare yourself the sight." ~ Albert Schweitzer C/F temp conversion