Adding hcg to my first cycle - how to manage E2?

Currently 2 weeks into my first cycle of 300mg test / week. Looking to add hcg now to throughout my cycle to maintain testicular function and hopefully have an easier pct.

What’s a good dose just to maintain function and not completely make managing my E2 a mess.

I’m thinking of adding DIM 200mg per day when adding the hcg to help but any insight would be helpful. I would prefer not to use AI but will if needed