Well, If you are willing to up your budget to $1500 and are willing to buy used/dealer demo you have greater options. I agree it is best to identify speakers 1st. Then find a integrated amp which compliments. That said when cost is a concern it is best to look for speakers that can be driven by a 50-100wpc, 4ohm capable amplifier to loudness levels desired within the size of room where system is to be placed. With that in mind, should the right amplifier be identified you might wish to purchase it.
Given you have a system in place you can afford to take your time, take advantage of deals as they come available and piece together a great system over time. Enjoy each improvement as it comes.
Regarding cables, I would purchase Canare 4S11 speaker cables. Great value, ~$1.50/foot. Purchase others used or discounted.
I use a MacBook Pro as a source for my secondary system. Many amplifiers, speakers, and DACs have rotated within over the last few years. Currently I am using it with a Yamaha A-s701 via the 701's internal DAC driving a pair of B&W 685s. Both bought used via Audiogon. The 701 lacks a USB input, however I own a USB/SPDIF converter. The Yamaha A-s801 has USB input in addition to coax and optical. Though I mention Yamaha, it isn't the only brand to consider. I think the A-sxxx line is good value. I am also a fan of the NAD C xxx BEE integrateds. Back to speakers, I may try a pair of Wharfedale Lintons should a used pair come up for sale one day.
Enjoy your search and keep us posted.
