Yes, start on cycle day 8. I just made a little calendar so DH knows to not be too tired or anything.
My cycles are longer, anywhere from 30-34 days (usually 32). According to my app, I should be ovulating around Friday March 3rd, I'll be interested to see if OPKs agree! I keep wondering if I'm not ovulating when I think I am and maybe that's why I haven't gotten pregnant. With DD it only took two cycles to get it right. But I'm probably just paranoid. They say there's only a 25% chance every month so we just got lucky before.
Maca root is apparently a great fertility supplement (and has other benefits like helping with low energy and to regulate your thyroid and such). I figured it couldn't hurt! Haha! I'm trying that over Vitex (another herbal supplement) because I heard Vitex is to help regulate your period and mine is already very regular so I don't think I need it. Maca is good for men and women.