well, judging by what we can see here it looks like the long out-and-back stretch isn't going to be very exciting. If this is a pair of coasters, it might be worth trying to re-design so that they spend more time interacting and less time going way out to nowhere.
Doesn't really look like a dueling coaster, more of a racer.
Do you want us to look at something in particular? Or did you just want to show a map?
Layout.
We can't really judge the layout by a map.
Why can't you put the whole coaster in the map?
well, judging by what we can see here it looks like the long out-and-back stretch isn't going to be very exciting. If this is a pair of coasters, it might be worth trying to re-design so that they spend more time interacting and less time going way out to nowhere.