I, personally, am not a fan of sewing long rows or columns together. I feel like things can get stretched out that way. probably just bad technique on my end, but I prefer to sew in "neighborhoods". Instead of sewing a row of 7 blocks to the next row of 7 blocks, I would be inclined to sew pairs (one from row 1 and one from row 2), then sew pairs together (to make a kind of 4 patch), then sew two 4 patches together, etc.
Not sure if there is an actual advantage to it, I think I just like it because the time each is under the needle feels more manageable, instead pushing long rows through.