Yeah, before i start wacking you with a trout and general advice i'll make some points on the map.
-I've made some things detailed, removed a lot of those overlapping lights in the one building, set ambient to about 50 and it compiles in about 5 minutes. I think what you wanted was some overall lighting.
-There were quite a lot of errors during compile.
-You have a lot of z-fighting caused by your doors
-the area you are making is tbh too big for your experience.
-I did not have the problem with the red under the om, the bleeding is a construction issue.
General advice follows.
Don't take this the hard way, but currently you're in no condition to make a worthwhile map.
Start with a couple of small maps consisting of only a few rooms that will never get released so you can see what does what instead of everything at the same time, read some tutorials.
Next is a quick list of things you better learn if you want a nice map.
-caulk
-patches
-bleeding/lighting
-z-fighting causes
-sparklie causes
-clipping tool
-texturing tools
A place to start learning and with some usefull links is
linked here.
Don't be afraid to ask questions there, those are some of the most knowledgable mappers on the internet.