Hi I have 2 male persians & a female moggie. The males want cuddles all the time and to be around us all the time. The female likes cuddles but only on her terms.Depends on what you want really but I have found male cats to be more affectionate than females. It will take time but whichever sex you get your other female should be ok with it. My female keeps the boys in line but they all eat and sleep together.