Please forgive my ignorance, if you can help me I would appreciate it! I am a professional singer, mostly weddings, funerals, and church gigs. I don't play the piano, but my 5 year old twins and I want to learn. So, I want a digital piano in a case, with an LCD screen, disk drive, (so we can learn to play) and a sequencer that allows vocals (or several tracks of vocals) to be recorded as well as piano. It needs to be easy enough that a hack like me can figure it out, but advanced enough that my long time pianist can go to town. I would love to be able to record our music for folks considering hiring us. Any thoughts? Again showing my ignorance, would a Suzuki ST-7 do the job? THANK YOU!