You've done a good job of selecting a very useful parts mix for a touring bike. There are two potential issues you will have on any frame when building up a touring bike. (1) The first is whether the tires you want will fit. It looks like you've done our homework and the 700 x 35c (which is a good size for touring) will work. As a general rule, a bike built for center pull brakes should have plenty of space for a fairly big tire. (2) The second is ideally you don't want short chain stays so that you have heel clearance. Again an older bike built around center pull brakes is likely to have longish chain stays.
You're plan seems sound; I'd wouldn't hesitate in building a touring bike around a frame like this.