Is it a good idea to have a pool party sleepover with one person of the opposite sex

[@$h!3y]

at 14? I am having a pool party sleepover this month and i am having 3 of my closest female friends and 1 male. My dads girlfriends son is 11 and is inviting one friend. My dads room has a door and screen door that lead to outside. We are thinking about having 2 tents set up in the back(a guy tent and a girl tent)near the screen. If it rains we will all sleep behind the couch because my dad will sleep on the couch. All my female friends are my age but my male friend is 12. My dads girlfriends sons friend is 12 also and friends with my friend