As long as that 150kW is only in "bursts", you should be OK as that would only be ~ 380 amps from a ~ 120 Ahr pack.....so about 3C load peak.
But , if you are not using the original Tesla cooling systems, you should not expect to hold that for long.
Range is tricky to predict since it is much more a function of system efficiency...motor type, gearing, etc...and aero effects/ speed , driving style, road conditions, etc.
Remember, the Tesla has a much better aero design than a TR4 !
.......but not as much character !