All you need. Nothing you don't.
Church traditions are often lumped together and denounced. I don’t think it’s quite that simple. Paul, in fact, wrote in favor of keeping certain traditions:
Now we command you, brethren, in the name of our Lord Jesus Christ, that ye withdraw yourselves from every brother that walketh disorderly, and not after the tradition which he received of us. 2 Thess. 3:6
Therefore, brethren, stand fast, and hold the traditions which ye have been taught, whether by word, or our epistle. 2 Thess. 2:15
So, we must ask: Are these merely traditions of men, traditions of the elders, or did they originate with the Almighty? If the latter, we need not fear them but rather enjoy them to His glory.