Yup, you can change Google Map size as well, its in your core/local.config.php:
Config::Set('MAP_WIDTH', '600px');
Config::Set('MAP_HEIGHT', '400px');
Config::Set('MAP_TYPE', 'G_PHYSICAL_MAP');
Config::Set('MAP_LINE_COLOR', '#ff0000');
Config::Set('MAP_CENTER_LAT', '45.484400');
Config::Set('MAP_CENTER_LNG', '-62.334821');
As for languages, once I finalize the admin panel, translations there can occur