Unless you could get a generous sidegrade discount from Munki, I don’t see why you’d spend more money assuming you are telling us the current solution works and you don’t need any additional capability.
Now if you wanted to build profiles from larger patch samples, or build CMYK profiles, or if the current settings for your RGB profiles (perceptual table) needed more options, that’s a different story. But it sounds like you are saying, it ain’t broke. So don’t worry about fixing it.