To answer one question, the abs will work fine.
But I would highly recommend changing to stainless braided lines at this point because the gt lines will not work. The cobra brakes use a differect banjo bolt that you can get at pepboys or any autoparts store. I got my braided lines from partshopper on this site. They dont come with banjo bolts or copper washers. So get those also. Like I said, you can get this stuff at any autoparts store.
Dan
BTW, only took 45 minutes. If you havent done a brake job before expect it to take longer. Also helps if you select all the sockets you need ahead of time. So searching for them in the middle of tear down wont be a problem.