There does not seem to be any Total Points limit specified for a given team, beyond that implied by the fact that 7 players each fielding a maximum Tier IV vehicle is indicated. The assumption, therefore, would seem to be that a team can total 7 x 4 = 28 tier points total.
The only logical vehicle for entry in this tournament would seem to be a fully upgraded T-50 using gold ammo. No other Tier IV vehicles can probably compete with a line-up of 7 T-50 light tanks, particularly on an open map like Prochorovka, so perhaps the contest should be renamed the "T-50 Skirmish Tournament".
In reviewing the teams forming for the contest, I note that Moderators and WG Staff are being allowed to participate, which implies teams with virtually unlimited access to gold ammo. This is turn creates the logical presumption that teams NOT using gold ammo will be at a decided disadvantage.
All things considered, this promises to be perhaps the best conceived Tournament since the Loltraktor Contest.