Bonuses are really big across the board. If somebody gets a good drop and nabs a region early this could make for some short games. West Texas is +7 for holding only four territories!
Dead Zone: might not be necessary to say there's no bonus for it.
In the legend, who's the Mexican Army? If you mean it's a +3 for holding all Mexican artillery, why not just say so.
map size, from How to Make a Map:
The type of image file must be PNG, GIF, or JPEG. You must design two versions of the map: a small (up to 600 px wide), and a large (up to 800 px wide). Height must not be any greater than 600px on small maps and 800px on large maps, but it is recommended that you do not exceed 350 px on small maps and 600 px on large maps so that users will not need to scroll down to attack.
Minor exceptions are made in special cases... you'd have to make a pretty strong case for why this map should be larger than the specified sizes. As it is I don't see why you'd need it more than anybody else.