I want to do a tune on my 1992 Honda Civic LX 4 door sedan?

Im pretty sure its due for one, it has 114,500 miles on it. with the 4 speed automatic transmission and the 1.5L 4cyl. I am going to get NgK plugs and wires as well as Yec cap and rotor and a new distributor cap. as well as a dural last gold battery and a k&n air filter. i just had an oil change not even 500 miles ago and new tires as well. any other suggestions to get best mpg and power?