I don't know what ranking will be an ending one for Girona but to become a new powerful force in La Liga, they will need to have some good seasons. Girona will have a difficult summer next months and I don't believe they will be able to keep their best players after the summer transfer. If they lose best players, we can easily imagine how Girona will play in a next season.
When a team performs well, then definitely different clubs comes to hunt for their players so with the kind of impressions that Girona have created in the la Liga, if they are fortunate to win the league title then they might actually lose some of their players to other clubs that finds quality and professionalism in their players. Girona's performance in the la Liga this season is wonderful therefore if they maintain their consistency and possibly win the la Liga, it's gonna be a huge achievement for the club in it's history.
Girona took everyone by surprise this season as no one saw them going this far in the la Liga considering the fact that they were just promoted from the Spanish la Liga 2 to the major la Liga just about 3 years ago and they've actually came back to revenge their relegation when they were initially promoted to the la Liga in 2017 but were relegated after just two seasons, so this time they seem to have been more stronger to the extent of becoming this season's la Liga title contenders.