Well, with an opk, most people will ovulate 12-48 hours after the LH surge is detected, most common is 36 hours after the actual surge.
You should test between 2-8pm for the most accurate results.
The fast/die soon boy sperm and slow/live long girl sperm theory has been scientifically disproven. The fast/die soon sperm were the fully mature sperm, and the slow/live long sperm were immature sperm. The gender was 50/50 for each kind of sperm observed. You can visit
http://www.in-gender.com/cs/blogs/Ge...1/13/5342.aspx for info about that. So timing for gender doesn't really work.
The popular theory going on now is the acidity/alkalinity of the vaginal track. For a girl, you want acidic, for a boy, you want alkaline. It is done with douches, diet, or supplements. I subscribe to a website that is all about gender. It is ttcaspecificgender.com
Anyway, I hope you will be able to start TTC soon and get a wonderful little boy! Good luck, and have fun!