Not even in the ballpark, you are several dump trucks short of the amount you will need - waves will wash under the footings of your new seawall and it will eventually collapse. They also should have put material (think of a VERY thick painters tarp) under the rip rap to keep it from sinking and help retain the soil.

If I remember correctly your place is on Martin - which is raised and lowered annually. When Alabama Power raises the water over the next couple of months the waves will begin washing it out, in the Fall when they lower the waves will continue to wash it away - until the footings are exposed, then it is just a matter of time without the proper amount of protection.