enjoy your ride. you can add the windscreen, but don't do so without the wings. for summer, i also have a fly screen and up to about 60 mph, it works well, very smooth air. the handlebars are a little forward on the custom, so you get more lean against the wind. finally, i think the rear suspension may be a better quality with slightly longer travel than the touring comes with.
give us some impressions and pictures when you get back.