About the Walmart potato buckets. There are two growing in each of two pots and four growing in the third pot.
About the Fingerling potatoes: Just looked at them and next week some time most should have one inch growths out of the eyes - a few already have that much. I think you said wait to plant until there was one inch.? I really will have to go to Lowes to get potting soil mix for that big bag from Mega Greenhouse to plant those potatoes.
Yes, one inch minimum for the root sprouts before you plant them. Plants should have grown to 4”-6” before hilling them.