This isn't uncharted territory for this program. While it wasn't to this extreme, DP had to turn over a pretty weak roster when he took over from Laird. In this free agency age of D1 athletics, there's going to be more players available then roster spots so filling the roster isn't the issue. The issue is the same issue this program has always had and that's filling the roster with enough quality talent to be competitive.
The lack of coaching experience is concerning, but IMO it's not as critical in this current free agency era as it was in prior eras. The age of developing talent over 3-5 years is over, it's now about assembling the best talent on a year to year basis. Maybe we hold on to good talent for 2 years, but most likely a hot commodity is gone after a stellar season (look around the BSC, lots of top talent hit the portal). If these coaches have an "in" on quality talent and being able to bring them here then this might work. If it doesn't work then the on-court product will be no different than the many failed seasons of past regimes.