I wouldn't recommend Primo for a starter simply because of the injections and the long ester. I would recommend Anavar for the first several and others like turinabol before going on to injectables. Estrogen conversion isn't a concern for a sex that thrives on estrogen, it's the androgenicacy that causes problems.
I know two women very personally who cycle and they both cycle very similar with Anavar split into two doses per day. They both have also tried, enjoyed, and recommend Turinabol as another option. Anavar at a dose of around .075mg per pound of bodyweight is a good start and really anywhere between 5-10mg per day split into two doses is a good reference. Half that dosing for Turinabol. My lady is currently on 10mg of Anavar and 5mg of Turinabol and both of us are loving it.
Tapering, even though using a very short half-life steroid, relatively at least, seems to aleviate mood crashes, depression and a killing of the sex drive that women tend to experience when they come off. Using Anavar as the example at 10mg per day for 5 weeks, one would then dose the 6 week at 10mg, 5mg, 5mg, 2.5mg, 2.5mg, 2.5mg, 2.5mg and during this taper dropping to once a day dosing is fine. Using 5mg tabs also makes dosing easier.
Any specific questions I will be more than glad to answer and ask my lady friends for their input and opinions.
Not to hype it up for anyone, but Anavar increases their sexually pleasure more as their clitoris gets stimulated and sensitive, and turinabol increases their sex drive and desire to have sex more, the combo that my fiance is on right now makes it almost impossible to keep up with her - I was so tired the other night and was actually hoping that she had fallen asleep so as I could get some rest!!! LOL! Note: Better/more sex is never a reason to run a cycle, though using a test cream on her clitoris on the weekends does wonders.....