Hi, I am beginning to knit ponchos for my 2 daughters. The pattern calls for size 13 circular needles 16 inches. I only can find them in bamboo and I feel as though they are too blunt to knit with the bulky yarn the pattern calls for. I have the knitpicks interchangeable needles but the biggest they come in is size 11 and they don't sell that combo individually. Why is that combo hard to find and do you think I could just go with the size 11?
P.S. I'm new at this as you can tell!