I know someone has laid claim to the Ryuujou but if it ok I'd like to take a crack at it as I found some really good blue prints of her.
Feel free to go on, there are at least four IJN Aricraft carrier classes that I might plan to draw before focusing on the Ryuujou. Just make sure that the blueprint is accurate, as I've found some that ended up beign wrong myself. This for example
seems good at first glance but sports a wrong undwrwater hull a the stern and mixes up many pre an post 1934 features: the funnels are shown as they were heightened after the 1934 refit, but at the same time the blueprint shows three 127mm guns on platform, a feature dating before the refit (there were just two after). It also shows the keel ballast, another post-1934 thing.