Hi Chloe!
Congrats on jumping into the terrifying but totally worth-it, world of your 1st indie game lol. =)
But seriously, I think you'll find it really fulfilling. Are you pretty much going to be a solodev (I cant recall if I'd already asked you that)? I read on the game page that this is going to be full 3D with a battle system and everything. Certainly much more realtime than anything Renpy can pull off! Speaking of "pulling-off" I'm sure you can do exactly that with Fever.
(Btw, I liked the concept! I was wondering at first how pirates, horror, and dating might go together...but this post paints that picture)