I think those numbers sound very interesting and definitely better than what's on RC right now, though they might make big thrusters too strong. If small thruster power is increased/fixed that will have an impact too. With these numbers, huge thrusters will be nearly twice as cost-efficient as small thrusters (if engine rooms are allowed). The spin-up time might not be enough to make up for that. But I'm not sure, and I don't think anybody will be able to know for sure without lots of testing.
If lateral thrust is staying, can it be applied evenly to all thrusters?