Change the spark plugs. NGK v- power is fine and cheap. DO NOT USE BOSCH
Check that you have the PCV and IAC hoses correct, and all intake boot clamps are tight.
If problem persists, change spark plug wires (NGK) and possibly try another known good coil.
FWIW, the high pitched whine at full throttle as RPMs build is normal. It's a result of the shape of the intake snorkus. The accordion shape of the tube acts like an Elk Bugle, lol.