Motorkhana in a Liberty

Thinking about trying Motorkhana as a bit of fun, obviously the Liberty isn't ideal, but I'm stuck with two of the things 
Just curious as to how it'd go, anyone had experience?
Have 3 sets of wheels/tyres at the moment not sure which would be most suited?
-Good set (wouldn't use)
-235/40/18s, low-end performance radials
-215/45/17s, old and slippery as hell, can spin them up very easily
Also heard of people having issues with power steering systems overheating, something I should keep an eye on? Or not much of a problem on these cars?

Just curious as to how it'd go, anyone had experience?
Have 3 sets of wheels/tyres at the moment not sure which would be most suited?
-Good set (wouldn't use)
-235/40/18s, low-end performance radials
-215/45/17s, old and slippery as hell, can spin them up very easily
Also heard of people having issues with power steering systems overheating, something I should keep an eye on? Or not much of a problem on these cars?