to find out the sex or not?

this is my last baby (my 5th) and my other 4 are girls, i really hope for a boy but am happy long as its healthy. im torn on whether to find out and have a gender reveal or just wait ... some reasons FOR finding out... i can be prepared. if its a boy i have NOTHING. if its a girl im set. if its a boy i want him circumcised (personal preference do not judge) and its gonna cost $480 so ill need that upfront.... some reasons why i dont wanna find out is basically being my last it would be cool to have a surprise... not many surprises left in the world... this would be a good one. i found out with all the other 4 .... i dont regret finding out but i am torn between being organised and ready and wanting a surprise