After doing the track day at the national day yesterday I am happy at the moment with the power

but realised the stopping power is not really up to it

I have 17 " 7 spokes on at the moment but going to look at getting some rims & tyres just for the track as I have made a mess of one of the 7 spokes after having a run in the gravel

So looking for recommends on brake upgrades and rims and tyres but not wanting to spend thousands.