You can take a look at "The Ship Girl Begins From the Beginning". The main character of this novel is very similar to the plot you described. He had also entered the Ship Girl World with the Ship Girl System he had previously played. He had a large amount of resources at the beginning, and many misoperations had led to the waste of resources. The plot of this novel is compact and interesting. There are also some battles and plot developments. I believe you will like it. I hope you like my recommendation. Muah ~