Both of those are my old cars...
The simple answer is, as much as you can get. They don't make too much for the new Accent yet, but two sets of camber adjustment bolts will go a long way up front.
When I autocrossed my old turbo Accent, I was almost 3 degrees negative in the front, and 1.5 degrees negative in the back. More than that and you start to loose contact patch, and without a limited slip, you can loose acceleration grip out of a corner. I run near 3 degrees negative in the front of my BMW, but I only ask those wheels to turn. I was running coilovers and camber plates, but you can probably get near 2 degrees out of the front with just crash bolts.