Morning Kerry,
I organised several events last year with the help of friends. so far we have raised over £15000.
Similar to your planned event we ran a ball in March this year. It is featured in the Fundraising success stories on this site on the following link.. http://www.myeloma.org.uk/get-involved/fundraising/fundraising-toolkit/success-stories/delivering-a-fundraising-ball/
It includes some tips and advice.
The event included a band, an entertainer, raffle, games, & auction. We raised just over £8500
I have got lots of templates of letters,prize lists, posters, flyers etc if you want them. Just contact me for details.
Steve