At 500mgs a week your E2 will undoubtedly be high. The question really is how are you feeling? Are you holding more water than you would like? how's your blood pressure? Are your nipples itchy or irritated? If your answers are good, no, normal and no, then just keep doing what youre doing and stop overthinking things. Bloodwork is great but you have to listen to your body. Familiarize yourself with E2 related side effects and stay in tune with your body, if you start noticing these things then up your dose. It seems like you are going in the right direction just over thinking things and are hung up on the wrong things.