That is very unrealistic. These kids came from what will be 5 or 6 different High Schools (Pickett Co , Livingston Academy, Dekalb Co, Macon Co and either or possibly both York Institute and Clarkrange).
It would be like keeping all the Nike Flight kids together at one HS.
Niow if you are talking about keeping them on the same AAU team, I don't see after a national championship any reason why they would go to another organization. In fact, it is more likely that a good number of high talent Upper Cumberland kids that played for other organizations would want to, for the first time be competitive with the big name teams and also save money & time by playing for the TN Rush.
TN Rush has made great strides over it's time as an organization, so much so that they are competing with (and in a couple of age groups actually beating) the much larger Flight, Pride, Force, Fire, Sol, etc programs.
The fact that the TN Rush is even in the conversation with those programs is a testament to the founder, Matt Ferrell, the coach of this team, Josh Agee, all the coaches and most importantly the kids from the Upper Cumberland who make up the Rush organization.