For a DAW, you should get Studio One 2. It's really intuitive. Get Native Instruments Komplete 7. It has some useful shit, but I pretty much only use Battery 3, Kontakt 5 and Massive, so I suppose you could get those separately. As for samples, I find that the piano libraries by Imperfect Samples are superior to anything I've tried before, but they are, I think, 15 GB a piece. Also, get Spectrasonics Omnisphere and I promise you that you won't run out of interesting patches anytime soon.