[aerohead]

Just now caught your thread.
*With 1:1 scale racing,you'd want as much weight as the chassis and tires could survive,and use 8-12-miles of run-up to achieve your terminal velocity.
*Liquid fuel would have thousands of kW-hr capacity.
*You don't have either luxury.
*1:1-scale race cars don't have any suspension at all.They don't want any induced drag to alter the inclination of the body at any time.
* The scale of your racer may necessitate some wheel travel,as at 30" overall length,and small diameter wheels/tires,the smallest track deformity could cause the car to be thrown out of control.
*Really spongy-gummy tires might deform enough to absorb some surface irregularities.Don't know.
*If so,then you'd want a body shape incapable of generating lift,most likely would want to intentionally generate downforce,of which the motor /battery will have to overcome this additional drag.
*At 30-inches,instead of 30-feet length,you'd have to test your model at 2,400 mph,to properly simulate 200-mph full-scale effects.
*That's impossible,due to compressibility effects.
You have some really unique challenges. Quite a project! I'll do some thinking.