Too poetical. Sounds like a name Cervantes would use for a shy, laborious girl in her late twenties who doesn't like her suitors.
Overall, yes, it sounds too medieval/early modern period-esque. Nevertheless, it's pretty. :)
I prefer
Flora but I see the appeal of
Florinda.
I appreciate
Florina too.
“Dear optimist, pessimist, and realist – while you guys were busy arguing about the glass of wine, I drank it! Sincerely, the opportunist!”
-Lori Greiner