Biggest t/bar avail RF, - pen springs in the rear, heavier spring LR .
Check tire temps across tread(?) for heat with temp gun, adjust air pressure for even temps.
Some drivers prefer lotsa caster RF, so car tends to turn left by itself, and needs to be held straight . Lotsa NEG Camber RF, - some Pos Camber LF .
Get it as low as rules allow.
Good luck, have fun .