I've been working with a server that is using Os-Royale. Been in development for over a year, I HIGHLY suggest you to use a different base man. There are like 2k+ bugs that we've found and it's just a waste of time & money. Even after fixing so many bugs players still managed to find 200+ more.
But it's up to you mate.
But to answer your request, Zac (Developer from Illerai) is very good with client sided things. You should hit him up.