Looks like a nice bit of kit. IMO you need to spend your money with
a race instructor and get more seat time, these two things will make
you faster than spending your money on more power. These cars are
designed to work on aero loads, to gain full advantage of this, you
need to carry speed through corners, an instructor will teach you to
push to the limits and get the full potential from the car.
All my own opinion of course, good luck with the car and above all,
enjoy it.

Thanks,

Matt.