No people. No prob. [He's throwing in about twenty hurdles spread out from one side of the room to the other, and since he knows Subaru is a fighter, he puts the height limit at twenty feet. Highest he can get without causing problems with the ceiling in the room.
He sets it up like a scaled model of a city. The highest hurdles are mini sky scrapers and he makes sure two of them even have the traditional point into an antenna. Two feet long each, but sturdy enough to push off of though if needed. There's a skywalk between two of the buildings that's big enough to walk on and a bridge over a fake river in the center of the city. To make it fun he throws in a flip switch that will make one of them collapse at a random interval not even he knows. Then he sets some of the buildings to explode at 10-second increments.
And he puts laser cannons on most of the "rooftops." Just for fun.]