Here is how I see Whit evaluating the 2 if Buzz wants to play in the postseason:

Vegas
Pro: Probably less expensive for VT, up to 4 more games
Con: Games are played in 1 weekend so less practice time

CBI
Pro: Home games could continue to build fanbase, up-to 6 more games (4-5 at home); played over 3 weeks so more practice time
Con: Unlikely to have any marquee home opponents; CBI requires guarantees from home teams

If the team is healthy and still playing well at the end of the year, I think entering one of the 2 tourneys would be beneficial. VCU won the CBI the year before their Final 4 run :)