The Hunter machine can accommodate 19" wheels.
The stock 350 has front and rear toe adjustment and rear camber adjustment, however, it does not have front camber adjustment.
Depending on how much your car is lowered will depend on if there is enough adjustment to get your car to within OEM tolerances or to the spec that you require.
On the front, I would run with the negative camber that you have, if you want more then adjustable top arms would be required.
Front toe I would run at parallel.
Rear toe I would run at a little toe in.
Rear camber I would run at about -1.5 degrees
The tyre wear that you have on the O/S/R is caused by excessive negative camber.
The above recommended settings should provide you with decent handling and also tyre wear longevity.