What your going for sounds about right and will get everything done EXCEPT: Power supplies. But, this depends on if your gonna stick with the integrated graphics that the CPU has. If so, then the PSU is fine. If not, then well tell me the card you might be looking at.
And for AMD, well, AMD is always a good choice too, but they are power hungry. Im not that familiar with AMD products so i can't say.
So which i5 processor are you looking at?