Hi edwardwholt, sorry for delay in reply.
No, at the moment Pro Version doesn't have the same feature to select how many tracks to display before 'read more' button. I will add this to my list of features to integrate for next version.
While it would be possible for you to manually modify the code to do this in the meantime, I would not really recommend for non-technical users as it needs to interact with 3 or 4 files. Need to change the html, php settings and some js files for it to work.
Anyway just wanted to let you know I'd seen your request and will add this feature to next version of the plugin so stay tuned!