For me it depends on the pattern. I too do a test block. If there is repetition in a block then I will generally do a piece of a block over and over so I can chain piece. I'm working on a quilt now that has a variety of log cabin blocks in it so I am making all of type of block and doing all round 1 then all round 2 etc. I find it easier to keep track of things that way.
I use a folding cloths rack to hang my strips and keep them tidy along with starched pieces of fabric. Since the strips for this quilt were different lengths I used bull dog clips to keep the cut pieces together so if I was doing 12 blocks I would have 12 round 1 strips clipped together and put those strips on by chain piecing.
I find that I have greater accuracy when I don't stand for hours cutting strips and pieces as I get bored, tired and careless. If I break it up, cut some, sew some, etc it is better for my frame of mind.