hoster show sound advice

[ray ray]

Hello all i am requesting advice on sound for my future shows.
my setup is as follows
hoster4.03
hp pavillion dv-6804 notebook
soundblaster live external usb sound card
windows vista home premium
vocopro da 3900k mixer/amp
i am looking to add better sound quality to any future shows i am concerding getting a Behringer XENYX 1832FX Mixer /usb interface
now to the meat of my question is this a better way to go or would i be better off just trying to get better sound from the voco pro mixer/amp or would there be a better mixer for this purpose or should i also buy a seperate amp to run this mixer setup i'm on limited income due to accident at home that broke my ankle in 2 places will be out of work doc says for another 5 months min.any advice would be a help also want to record my 11 year old daughter for our own self she has won several karaoke contest recorded at big mama recording studio 2 cd's the recording would be to help her and not for sale as want to be legal any advice on recording/editing software for this purpose would be a help like cakewalk sony acid music thanks raymond