I will be traveling, and I'm looking for a laptop that is small, lightweight, slim, and about 16 inch screen. A laptop that can handle photoshop and Lightroom, and has a USB port to connect a portable hard drive and a slot to read sd card. Would i3 or similar to AMD processor is powerful enough to run photoshop and Lightroom? I have no interest in getting the latest i7 and Nvidia graphic card. Any recommendation?