Replacing Rowan Scottish Tweed Chunky

Ok I need some help here…I want to make my husband a Smokin’ Jacket (out of Son of Stitch N Bitch Nation) …however a skein of the Rowan Scottish Tweed Chunky can be very expensive :pout: and catching on sale is rare.

Do any of you know what I can use in place of the Rowan Scottish Tweed Chunky ? Crossed Fingers