Choosing Bridesmaids

My future husband and I have decided to have three attendants each. So far I have chosen his sister as my MOH and another cousin as a bridesmaid. Other than that I really don`t have any close friends or any other femal cousins. I hate to ask someone that I barely speak to to travel the 600 miles to the wedding and pay for their own dress for it. My FH has several female friends he is close too but i rarely see any of them. The wedding is only 4 month away now so it is getting close. Please help!