Johnny that looks great! I just received some important info on making maps that we all need to know so i'll pass it on here: its best if you "frame in" your map so it loads square(ish) to match the shape of your screen. Can you load the map called e_desert1 or 2? You'll see that many of the tiles are outside of the framing borders and thus seem wasted, but this is because that map (and most maps?) are framed horizontally (square/rectangle) whereas the mapper itself builds everything with that isometric perspective. Square-framing a map clips off the isometric corners so it loads horizontally. Not sure if i'm saying it clearly enough, but basically when a map loads, it needs to be a map in the same shape as your screen, which is a horizontal square/rectangle.
To achieve this, we have to (maybe first) frame a map by using (maybe) 9 rows of hex blockers arranged in a large rectangle around the area of what will be your new map. In your case though, you've already done an amazing amount of work on this one, so you have to somehow frame it squared afterward.
I bet this was confusing to read. And pictures would help. Anyway, great job on this map! Seeing it is very motivating.