I have several questions if anyone could help me I would greatly appreciate it

1. We just contracted a wedding consultant and she said that she would need our names of bridal party, including hostesses and ushers. Is it ok have the groomsmen (including Best Man) as ushers or should I get other people to usher?
2. I have 4 BR and 4 GR, I was thinking of having 2 hostesses help the wedding planning staff with setting up the favors or wherever they need assistance. Also to greet the guests and pass out ceremony programs. Also have one hostess make sure people sign the guest book at the reception as the other helps out in areas that need it. Does this seem ok or do I have the duties of a hostess wrong?
My FH is concerned and thinks I have too many people involved in the bridal party. He wants people to just come to the wedding and enjoy themselves without necessarily being put to work. Im confused, It's the both of us, 4BD & 4GR, my mom and dad, 2 FG & 1 RB and the Officiant.
I haven't even considered who would be reading during the wedding or anything...I just don't know if my FH is correct is the bridal party getting too big?