I think you did catch my big mistake in my sentence; I meant "I have NO experience" in setting up karts
Your explanation on kart setup is precisely what is so difficult in driving karts competitively IMHO. Thankfully, it is a smaller vehicle and getting on a table/jacks is easier to make setup changes, but you really need to understand the geometric options, which are finite of course. At the same time, not having the help of shock/spring settings makes the whole thing even more difficult.
Do you use A/R bars on karts?
And driving... OMG, I cannot imagine working within a window of 20 mph; each 1 mph, or even 0.5 mph, must count. So, if you brake 5 ft too early or too late, you can either loose a spot or race, or worse, find yourself moving the lawn. Amazing.