Welcome! It sounds like you're to a good start.
As far as the OPKs go, I don't start testing until about CD10-11, and I test twice a day (at 10 and 5). However, that is because I know I usually ovulate between CD13-15. For me, my OPKs get darker until I hit my surge, where I'll get one or two positive tests. Of course, I'm not using them right now. I still have to get my IUD removed (hopefully this week).