I have a 75 gallon tank with 2 ac110s. I also have 2 10" air stone bars. Do I need them at all?? Pics below


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Unless you seal your tank it is HIGHLY unlikely you will not have enough gas exchange, unless you are way overstocked - but other problems will probably cause problems first. This is especially true when using most filters. As they return the water they create enough surface agitation. Usually tanks run out of oxygen because of completely unrelated reasons.
I will agree that it definitely is a plus to run the bubble wands. It helps to stir the water and in all my tanks the fish seem to enjoy interacting with the bubbles. In my first tank I actually named one of my fish "Bubbles" because he would ride the bubbles up to the top of the tank and then swim down to ride them again constantly. It was quite hilarious and fun to watch. Probably helped that he was a fancy goldfish and looked pretty odd to start with.