Unless the design requires it, I usually do not sew long rows, then sew the rows together. Instead, I square up each block and use Best Press on the back of it to keep it stable. Then, I sew blocks into pairs, then into four squares, then sew those together as I go. For me, it's too easy to watch long rows get wonky. I do better this way. This way, I have very few long seams to match and sew.
Krysti: Just go for it! Quilting should not be scary!