Torque Game Builder

Hello

My team and I are considering purchasing the Torque Game Builder. After
reading much of the threads from this forum we had a few questions about
wither or not the Torque Game Builder would be the right product for us.

We are looking to create a massive multiplayer online game (MMO) using
an isometric enviroment where players will be able to walk and interact
with the enviroment in a 2d or 2.5d world along with interacting with
thousands of players online.

Would the Torque Game Builder allow this to happen or do need to go
"PRO" or even use the Torgue Game Engine for such?

Thanks in advance.