Question about needle size
I am a relatively new, self taught knitter. I decided recently to try my hand at an afgahan. The pattern uses some techniques and stitches I had not used before. It's a large project (for me, 178 cast on stitches) and in the 6 row repeated pattern one row requires you to essentially double the number of stitches. The row reads: K5, *yo, K1; rep from * to last 5 stitches. The K5 on either end is a border and the middle 168 stitches is doubled with yo increases which are dropped on the the next row to create an elongated stitch. My problem is that this creates over 300 stitches that will not easily fit on my long needles. I'm using basic US 10 boye long needles. Is there something else I can do? I was thinking circular needles but I'm afraid of confusing myself and knitting the wrong side when I should knit the right side or vice versa (I can never tell which is which by looking). Any help or advice would be appreciated.