I have never done any type of patio or walkway project, but a friend of the family asked if I could make a walkway using dug up 16" x 8" patio bricks from their backyard. The walkway is only going to be about 30' long x 2' wide, no curves or anything. I was told to lay the bricks on 3" of compacted stonedust and that should be fine? Do I need any type of edging or can I do without it? Any feedback would help thanks.