Yep, pull the valance off for a littleextra room BUT you will probably still need to get the rear higher to get it out from under the car.
I use my largest jack stands and place themunder the torque tube in the rear on square blocks of wood about 1x10.
Raising the front some more will actually help extract the engine even though it seems contradictory. The front of your car will only go so low before you start crushing the front valance. DO NOT ask me how I know.
Good luck and have a safe trip.