I’m guessing you are dealing with serious buyers remorse over the amount you’ve spent, the last thing you want to do is toss another 4-5k into cables. You already have great cables.
The Vitus is probably awesome, I have’t haven’t heard it personally, but every integrated I’ve auditioned in that price range has been amazing. There is really nothing to nitpick. Live with your system for a while and fight the urge to upgrade. The buyers remorse will subside, unless you put yourself in a tough position financially, but thats a whole different conversation. Enjoy the music, I’ve read nothing but great things about Vitus, I hope to get a chance to check them out one day, it seems like they make some incredible gear. I bet the rest of your system is also killer.