I think it is generally ill-advised to deviate from OEM specs in most situations (I assume the professionals who designed the circuit are smarter than I, a marginally capable hobbyist).
The original coils were carefully selected in order to achieve the gameplay desired by the designer, and as PinMonk stated when you go in and simply dial everything up to “11” you’ll put unnecessary strain on a variety of parts and things will start breaking prematurely, and you can also conceivably screw up other aspects of gameplay in ways you might not be able to anticipate.
If the flipper as originally specified isn’t performing adequately, the first thing to do is to check everything PinMonk suggested, and given your pattern of playing definitely consider adding forced cooling. You also might consider simply doing a full flipper rebuild; your game is old enough that there is probably sufficient overall wear to reduce performance, and replacing all the consumable parts en masse (cheap and not difficult) will yield a noticeable improvement that will almost definitely feel like an “upgrade”.