Where is black? Unless black = white here, then:
Dunno if you hit your head against the wall, but these bases aren't balanced.
Sharks are at a huge advantage, they do not have any bases near anyone else's spawn.
The FBI is a GREY team which has 3 skins, regular Cop, SWAT and the FBI.
If only FBI is allowed, then they're still put at an advantage, maybe not as huge as the sharks - the FBI will be helped by the cops in Downtown and the SWAT probably too.
The yellow team is in the worst position ever. Near the airport zone, there's an army spawn. That doesn't matter much.
Vice Port - near the red spawn. The one in Little Havana? Hotzone, too. Attacked frequently by the Vercetti family.
The one in the water? I don't even..
Unless, of course, you are planning to kick everyone that will disturb the event by simply playing for example in Downtown which is the hottest zone in the entire server for probably 10 years by now which will reduce the server playercount to the people taking part in the event only.
[NOTE: BASES NEAR SPAWN AREN'T ALLOWED]
?
Sharks have their base on their spawn.
Maybe use an actual VC classic map as well, not this.