Well, if all you are doing is enanthate, I would do it once/week. I am not a fan of pins.
Enanthate is long acting enough to shoot once/week. Some will tell you to get the most even serum levels, to take it like Mondays/Thursdays. Forget that noise. That doubles the amount of holes you are making.
KISS- Keep it simple shithead. (at least that is what my dad told me it meant, lol. not until many years later did I hear the last 's' stand for 'stupid')
How does that sound? You might want to look into getting some fast acting orals. Otherwise, you probably won't notice anything for 4 weeks. Maybe dbol or something. Depending on the oral, run it for 4-6 weeks.