I'm also going to be knitting my first pair of longies. I'm planning on using the Tinybirds free pattern with Patens Merino for my baby boy who is due in November. I think I'm going to use the denim color and make them look like blue jeans! I'm in Michigan so I figured that I'd use the longies as pants and making them like jeans would be cute! I don't have any soft wool yet, so I can't use any from my stash. Have to go buy some tomorrow.