I am in the planning stage to make a rug. I have wool rug yarn for the weft. A pattern I'm considering calls for Rug Linen 8/5 for the warp. Because of the expense of using Rug Linen for the warp I'm considering using Cotton Rug Yarn 8/5. What are your thoughts?

Weavers often use Tow Linen for warp on rugs. Here’s some information on the Tow Linen we carry - https://janestaffordtextiles.com/product-category/yarns/linen/natural-linen-undyed/