Hi, Cargil. The carrier is a plausible vessel, maybe a little short for the air group of figthers and dive bombers that is depicted in your second drawing. And it will be an expensive conversion, and a time-consuming one. In my humble opinion, a less elaborate (for example, just fume vents instead of a funnel, less comprehensive radar suite) would be a more realistic (not in terms of plausibility, but in terms of available resources) vessel. But your drawing is Well done and Well detailed, as is the history behind it! Cheers!
Thanks a lot, mi amigo! Yes, the extension was a costly one but... at that time, "Graf Zeppelin" was being made as well as several conversions of older designs (like the 1934 and 1936 destroyers) as well as four new heavy cruisers (battlecruisers) and Germany had no technical and human resources for building another CV from scratch. The US Navy had the CV-1 "Langley" which was the main "inspiration" and the UK had from the time of WWI "HMS Argus" which both had similar dimensions (more or less 172m x 22m). The Japanese had already more than six carriers based upon former merchant ships' hulls and Germany saw itself as a purely continental power, while the needed resources were mostly far away, in different continents. This was the dilemna faced by the German government, not so much "Lebensraum" as Hitler always said in his speeches, but raw materials to rebuild its own industry and the economy. Like Japan.
As for the superstructures, Germany wanted an escort carrier whith enough living space for the entire crew to be able to live in the harsh conditions of the winter time. That made accomodations necessary as well as heated working and living spaces. As for the radar units, for weather reasons it was mandatory to install the FuMO units available to track the airplanes and their height, to be able to guide them safely back to the carrier when visibility was low. That is why I chose to install them, one unit facing forward, another one facing rearwards for guiding the incoming airplanes.