Create a custom .mbtiles mapbox map

We need a custom map made in Tilemill or other map making software using openstreetmap or other opensource map source and exported as a .mbtiles file. The map is of Gran Canaria in Spain and must be zoom level of 10-20+ and under 50mb, therefore higher zoom levels must show either blank data or pixelated data from zoom 16. The map will be exported and used with the mapbox sdk on a native iPhone app. We are looking for a quick turnaround on the map.