This mod is currently in 1.12.2. My Problem with that is sooner or later forge will stop support for 1.12. but many textures of the mod are based on vanilla textures, which changed with the texture update, so this will take a lot of time to transfer the textures. I want to hear your opinion on that topic as I'm creating content for you out there. If you want to add reasons for your choice post them below.
I think you should, mostly because this is where forge and other stuff is headed. Don't feel rushed about it, because i don't think support will stop anytime soon, but anything new you add would have to be ported up later anyway. Good luck with your mod!
Big news! There is a recommended forge version for 1.14 now! I hadn't time to test it by now, this will be my work of the weekend but if they finally changed the method names to something better understandable I can start to port the mod to the newer versions!