Max Speed unknown, when fuel runs out.
5000 seconds burn time = 83 minutes
Slow down = same as speed up
Faster than ‘usual’? Bigger holes than ‘usual’............
You misunderstand.
What is the max speed achieved by the space craft after acceleration stops?
Typical Mars-Earth transit - 12 months
New transit - 2 months
Probably LESS than 6X times usual speed.
Probably flies a much straighter line towards Mars, which would cut down the distance, which would reduce travel time.
5000 seconds is specific impulse (exit velocity divided by 32.174 ft/s^2), not burn time.