When setting up the front clip make sure you get the upper control arms set to the same angle (front to back) as the stock camaro angle. If you don't the caster angle will be off and you will have steering issues. Changing the wheel base length (I.E. different from the Camaro's 108" wheelbase) will alter the ackerman and anti-dive a bit, 5" isn't the end of the world but it does play into the overall handling of the chassis.
Mark