I think that is a good range of gears for a light touring bike. You will almost never use your top gear but it is a nice gear if you have several miles of shallow downhill. And 19.4 is a good gear for most of the steeper hills you will need to climb.

With a 46 front and 42 back, depending on how long your chainstays are, you might need a few more links than a stock chain. Thus, you might need to add a few links from a second chain to assemble this. I have never used an 11 speed chain, but I assume you can use quick links easily enough if you need to do that.