Do NOT go with BO unless you want to transition.
Years ago, when I was into body building, I used Fenugreek and Saw Palmetto.
I'm not sure if it was the FG, SP or the combo, but but my muscles were really hard.
I didn't know anything about PM at the time. PM seems to be the gold standard these days but FG is still a solid program.
I have always used products from GNC or Amazon, for example, GNC FG & SP. Amazon for Progesterone Cream.
Amazon PC... https://www.amazon.com/Bio-Identical-Progesterone-Advanced-Delivery-Pro-Relief/dp/B01N12IXCM/ref=sr_1_5_pp?keywords=Progesterone+cream&qid=1694708719&sr=8-5
Many people are using Bi-Est from Amazon. It gets good reports and may be the new way to get things done, these days.
Search the Synthetic Hormone section of the forum for info. If I understand, it would take the place of PM or FG.
Stick with trusted brands that can be vouched for by others.
Three companies that I trust are Swanson, NOW and Barlowe's Herbal Elixers. Barlowe's comes in glass bottles and is available at Amazon.
Don't get me wrong, there are many good companies with excellent products but I can only recommend what I have personally used and found effective.
If you were to use FG or PM, I would recommend starting with a low dose, like 500mg/day for at least a week. Then move up 500mg at a time.
Top should probably be no more than 2000mg but that's just me, others will disagree, I'm sure. If you are responding to 1000 or 1500mg, no reason to go up.
These are all my personal opinions. I'm sure others will chime in with theirs.