Clean slate... yet I drove a mini...

[SKurj]

I currently own a 2004 echo 3dr hb, with tein S springs and GR2's with not much else besides wheels and tires. I am about to purchase a low mile 2008 or 2009 yaris 3dr to replace it.
The problem... well I borrowed a 2003 cooper S for the weekend... that thing with stock suspension and the horrid run flats performed amazing particluarly in the cornering department.
Seeing as I will have a clean slate, and will be starting with an untouched yaris... what's it going to take to try and recreate the way the mini bends around the corners?
Definitely adding RR TRD sway bar, probably even have that installed before i pick up the car, then I don't know if I should be going coil overs... or springs and shocks.. bracing? Is it even achievable? If i was wealthy i would just buy the mini... so keep that in mind!

thanks