Wanted to chime in since I recently finished a 4 week cycle of both ultra hard and A4.
If your below range , maybe start with a 1-1 pump split of uh-a4, and then increase A4 from there.
Originally was planning on doing a Uh only cycle, but after 3-4 days or doing 2 pumps a day I was very achey, skrinkage of dick, sleepy, etc. most likely crushed estrogen. I started adding in A4 and felt immediately better. Towards end of Cycle, I was even doing like 4-5 uh-A4 pump splits because the A4 made me very euphoric , which was nice. Plus I think it’s easier to come down from high estrogen rather than vice versa.
I’m going to run same cycle of combo, but maybe use the A4 everyother day, at like 3 pumps max. I saw a thread of CD doing something similar . I’msure I’m missing stuff but Feel free to PM for more details on it