For what it is worth.
In your situation the R is indeed the bike to go for.
I seem to be going along the following path:
For road/light track .. Tricolore model where available (fully modified and as close to as WSBK style as possible).
In addition, it is my intent, if I am patient and lucky enough then I intend to collect Ducati RS models for track.
I don't really see any of my Ducatis as anything other than tools and toys and certainly *NOT* investments. They are an indulgent by product of my other investments and as such I will continue to collect them as a reward for my hard work.