My suggestion is not to wait till the peak day. The most fertile days are the three days leading to ovulation. I would say at least the two days prior to ovulation. Since sperms can live longer in fertile mucus and inside of the uterus, that makes sense.
If you wait till the peak day, you only have one day to work around.
There are different suggestions about how frequently to BD before ovulation. Every other day or everyday. One of my obs suggest if the husband's semen is ok, try everyday.
Below are some numbers I found on the internet a while ago. Sorry I don't have the original links.
Sex timing days before ovulation:
-5 -4 -3 -2 -1 o
Prob of success
one source: 35% 35% 36%
another source: 0% 13% 13% 28% 26% 5%
You can see one source said having sex on the day of ovulation gives the best chance to get pregnant, but another source says it is kind of too late. But both sources indicate having sex in the two days leading to ovulation increase you chance of conception. So I strongly suggest don't wait till the peak day to give it only one shot.