You will have a far better battery if you match the cell pairs to be as equal as possible. This means strongest cell paired with weakest, second strongest paired with second weakest.
Are you planning on capacity testing? (I never have done it with a capacity tester)
I top balanced in parallel, then built 2 4S batteries and put them thru a few charge and discharge cycles to get an idea which were strong and weak.
I then moved the 4 weakest (some guesswork with little data) to one 4S battery and the strongest to a second 4S battery.
I ran a few charge cycles, continuing to take notes on my labelled cells. From this I ranked strongest to weakest and built my pairs.
Perfect? No but 2 years of problem free use.
Hopefully this was clear. First step is to label your cells and take notes!