Bride`s Conflict With Mom & DJ

I am getting married in May 2004, and am worried that the DJ my mother has hired for my wedding may not be dependable. I live in Houston, which is four hours away from my home town, where my wedding will take place. I`ve only spoken to the DJ once on the phone (he did not return my two initial phone calls), and he has been unable to meet with me in person despite three separate trips I`ve made down there for other wedding-related appointments. On the phone I learned that he will only accept cash payment on the day of the reception, and he is not a full-time DJ. I also learned that he will not be the Master of Ceremonies at the reception. He said I have to find a friend of the family to do that for me. Is that normal? My mother has already paid the cash deposit and given him my list of song choices. I asked her why he had not called me to discuss anything or expressed any interest in meeting with me face to face. Her response was that he is shy! My mother is shouldering the bulk of the wedding expenses. This is one of the few things I have let her be actively involved in for the wedding. The other responsibilites she was given have not worked out as planned and I had to hastily take over at the last minute. I`d hate to take this task away from her (my married older sister thinks I should), even though hiring a professional DJ at my own expense for a higher fee would make me more comfortable (provided that I meet the DJ in person and speak with some references). I just want all my bases covered for the wedding. Do I sound like a control freak or are my concerns legitimate? I have lost sleep over this. Opinions & comments, please...