Current raster size: 21426 x 11141 (181.4 x 94.3cm @ 300 dpi)
Potential projections:
- Natural Earth
- Natural Earth II
- Robinson
- Winkel Tripel
- Kavrayskiy VII
List of projections: [https://en.wikipedia.org/wiki/List_of_map_projections]
Reprojecting layers in QGIS: [http://gis.stackexchange.com/questions/43848/how-to-re-project-shapefiles]