@krash16_ - let's go back and start over.... you pay state tax based on where you PHYSICALLY live and PHYSICALLY work. The fact that your employer is in KY does not matter. So you will have PA taxes withheld from your paycheck and only file PA state taxes.
the W-4 is for FEDERAL tax withholdings. Use this tool to help determine how much to withhold for FEDERAL taxes
https://www.irs.gov/individuals/tax-withholding-estimator
