Your specs on your laptop are fine..and will record audio and midi fine..

I think the biggest drawback for audio recording will be the speed of the hard drive..the current standards are 5400, and not to long ago, it was 4200..I have used both with good results, but if you had the upgraded 7200,it would be on parr with desktop performance..

I also think PC hold their own against the Mac..today.
Besides PC is supported by more software selections..
Mac still is know for graphics, but that has closed too..