Side note: I've just recently jettisoned the notion of sola scriptura and am considering converting to Eastern Orthodox (after fifteen years as non-denominational Protestant type).
And congratulations! The Orthodox Churches are very closely related to the Catholic Church. We recognize the validity of their sacraments and their clergy.
Here's a great list of links for comparing Catholicism and Orthodoxy.
Before you do something as disastrous as rejecting sola scriptura, which most definitely was the teaching of the church for the first 3 to 4 hundred years, I suggest that you read this book. It takes modern Evangelicals to task as well as Catholics for rejecting the historical teaching of the church on the authority of scripture.
Don't forget that another word for "yardstick" is canon. Hold fast to the canon or you'll be adrift at sea.