I know I am new to the FORD tuning world, however I have been envolved in Motorsport (Touring cars and F1) for many years.

If it was me I would start on the front wheel toe setting, this will start your turn into the corner, depending on the amount of toe-out or toe-in, you will be able to dial in a really responsive inital turn in, and not just feel understeer.
Then then next problem is the rear as describe in the above post, road car manufactures build in safe handaling by allowing the rear wheels of the car to "toe-in" on bump (this creates understeer) there is not a lot you can do about it. But if you could you would dial in more toe-out which will give you very good inital turn in (and poor high speed stability), but revert back to understeer once the car has taken a "set" in the corner.
S.