As long as you are introducing exogenous test you need to manage aromatse levels with an AI. Purchase another 2500IU of hCG and use it the entire time on cycle. Theres's no reason not to hCG it's an inexpensive insurance policy. You should have a PA on hand while using a 19nor, but as long as you keep E2 in check with an AI then you shouldn't have to use it.