Step up above Acoustic Signature Mambo

I have been happy with my Acoustic signature Mambo for almost a year now. Being new to analog, I haven't done any experimentation with various turntables , arms, phono preamps or that many cartridges. So, at this point, I don't know how much I can improve things and where the best improvements could be made.

Question, would the TW Acustic Raven AC be a significant improvement over the Mambo or would funds be better directed to soemthing else? Phono preamp? Speakers?

Andrew