Still a work in progress, but getting there... I think it's quite good right now.
Its quite challenging getting a cola flavour that is not too syrupy. I added the bitter wizard and the MTS vape wizard to try to soften and desweeten this a bit - it does that job moderately well.
Rum is there, but comes across as a clean, white rum and so I'll probably try to add a small accent of caramel or a brown sugar/spicy touch to "darken" the rum.
Lime zest is present too, which is nice, but its more zesty than juicy... Might experiment with some different limes to add a bit of the juice accent.