Tony,
I have a friend that purchased that Dell and it does everything you want to do and then some. However, his did not have an Intel processor, and the added cost of the Inetl was anout another $150. Everything else was just fine, and the thing is lightning fast.
Keep in mind that you don't need to spend huge sums on a computer to do the things most of us are capable of doing. We're not working with complex programs, huge graphic files and files that require incredibly fast processor speeds. Most of the files, especially midi and style files, are quite small and not at all complicated. The only large files are WAV and MP3, and they're not complex at all. Nearly every computer out there will process these easily. Even the quality of the OEM sound cards on todays computers have improved dramatically and do an excellent job of creating WAV and MP3 files. Dell makes an excellent product and their service department, when I had one years ago, was outstanding. This is an important aspect when purchasing a new computer.
Good Luck,
Gary
_________________________
PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)