There is another issue with the ‘small school’ approach. And that is Geography. Germany has great difficulty in getting to and from the Atlantic. It’s all very well for France with its Atlantic, Med main bases as well as basing in most Ocean's but Germany does not have this in 1933. For the most part they would have to plan to send this fleet through the GIUK gap just to get to the Atlantic. In OTL even with French ports giving them direct access to the Atlantic surface vessels and for much of the War Uboat’s could only raid. And then for every vessel on station, there would be another transiting to / or from and a 3rd training/refitting. The geography challenges of the Battle of the Atlantic as far as the Germans are concerned are massive. As it turned out, insurmountable. Particularly if a given vessel is damaged or experiences a mechanical issue. It’s a very long way home. And the chances of remaining undetected rapidly decrease as Allied AirPower improves and the useful application of radar and decryption techniques/technology improve (although those last 2 probably would be a consideration in 1933).