1/3 of pedophiles are gay men

Psychological Reports, 1986, 58, pp. 327-37.

1% of the population

National Health Institute reports 1.8% of the population are gay with a .14 standard error. Gays are made up of roughly 60% men and 40% women. If we go with a conservative estimate, since young people inflate the numbers due to insecurity about themselves and split that into 60:40, we get almost exactly 1% of the population as gay men.

lesbian couples have the highest rates of child abuse

I can't find my source for this right now but I can get back to you on it. It was a table listing rates of child abuse in different types of parentage.