Drop the s from the https
Power is nothing without control. Zero point adding bags of power if you can't use what you've already got, IMHO. You could throw £5K at the car to SC it or turbo it or whatever, and then after you're done sell it for half that. Alternatively, you could spend £2.5K on driver training and be quicker, smoother and safer not only with this car, but with every car you'll ever own. Skill for life, yo.
You could do half on the training and then half on some suspension bits & tyres, and then be seriously quick.