Hi. I believe not all the countries allow gender selection. My clinic, for ex., uses it only to exclude the possibility of transmitting the genetical disease to a future baby. And if we just wanted to select the gender just because we wanted to have a boy..Then we'd definitely fail with this intention. Anyway, it's your personal decision unless the possibility is not regulated on the country level. Good luck!
There can be errors with gender selection so I wouldn't count on it 100 percent but they do seem to have a decent success rate these days.