Thank you all.
Here are some ups.
For every home I'm using only 1 2048x2048 texture. I still have to texturing the props. To the streets and sidewalks I'm thinking of using 1 map of 1024 or 512 each.
Now my concern is the maximum number of texture that I use in every level. Someone could me Reply?
Another thing is that I wanted to know is if you can change the diffuse colors of the textures in the engine. For example turn those walls white plaster in yellow (as in UDK. As seen at 2:20 minutes of video:
http://youtu.be/0Mn7QPtS4cc?t=2m15s). So I would keep the same model without having to create a new texture, and thus save memory. Is It Possible?
Sorry so many questions but I can not get the answers in the documentation.