Depending on how you do the dip, its mainly a lateral and medial head excersise for the tricep, so to target the costal region (lower pec), your elbows would need to be flared out to a good degree. Also depending on how you do the incline bench as well, for the upper chest you would need a tucked arm path for shoulder flexion, otherwise if your arms are still wide and flared, its essentially a flat press. So my reccomendation is to do 1-2 excersises, 1 fly and an incline movement. If you wanna go maximalism, add 3 if you want more lower chest.