I would try it like that and adjust from there. If it drives slightly right add preload till its good. I like to start at neutral with no preload and make the car go straight. Sometimes you can get away with no preload depending on how the weight is distributed. Static weights on scales setting in the garage are nothing close to what it sees when it is launching.Its just an idea. Every car is different too. My car goes straight as an arrow with these scale weights, which are close to yours.

829 715
664 660