Boss, this appears perfectly legit if you are not recovering sufficiently between workouts, assuming you use those days for recovery. Be sure to not doing anything on those off days which interfere with your recovery.
Will you get as strong as quickly as a young 21 year old buck who can hit it hard every 48 hours? The answer is not a yes or no, it is "Who cares"? Your training is your training. You should still see progress.