Please edit your main post with the dl link then :)
It has way too many passages. If you want to make a layout like that, you need narrower tunnels, or less "mass" between two ways, so they count as 1, and not 2. Generally maps with more than 3 passages aren't much fun to play on :)
I made a
very similiar map quite some time ago, and I'm planning on creating a re-make to enchance its graphics and fix its bugs. Sadly, the dl link is broken, but I hope the screenie will provide some information on what I mean by making a layout like that better.