I cant second this enough. I echoed a lot of the same enthusiasm initially when getting into crossfit-style exercises but have slowly realized that heavy barbell/weight exercises is not that great for 5x a week training. I used to wear myself out to the point that my joints were aking so much that I had to take 1-2 weeks off just to come back to my old volume lifts. Its very easy to get too enthusiastic and it hurts more and more the older you are.