First, he plans to spend some time at the Grand Canyon.Then, next spring, he plans to dip his back bicycle tire into the Pacific Ocean and ride from San Diego until his front tire reaches the Atlantic Ocean in St. Augustine, Fla.But most of all, 8th Judicial Circuit Judge Scott H. Walden said he looks forward to settling into a quiet, low-key life away from the Quincy courthouse.Walden, the presiding judge for Adams County, decided that 20 years of deciding felony and family law cases was enough. As a result, he announced …