Yes. A chlorine reading of 10 is fine for your CYA level. Take a look at the Best Guess Chlorine Chart in my signature below.

Do this. Test chlorine this evening when the sun is off the pool and then again in the morning within two hours of sunrise. If you have not lost more than 1ppm of chlorine overnight AND your CC is no greater than 0.5 and the pool is clear, then you can let the chlorine level drift down and keep it between 3-6 all the time.