Do what I did, find info about your Class on the internet and then tell it to your dad. He will learn something new and you too. With my Sim-Racing experience and setup knowledge I can probably get a kart that feels grate for my handling.
I normaly have a base setup for my Yamaha when I get into a totally new track.
138cm left to right wheel distance. 0 or 0.5cm Caster (depends if the track got alot of corners or not) and 0.2 cm on Camber since it's suggested by alot of people on the internet. Then we used to have a air presure on the tires both front and rear but I can't remember how much. Plus we had Aluminium and (an other type of metall which I can't remember today) on the rims so we were testing if heavier tires or lighter tires would give the better performence.
Tbh we never were very detailed on that but on 2011 I will make sure that we are testing this things more often to find good setups in a shorter time once we are going to have a race on tracks which I have never driven a lap on before.