Spencer, aeration is always great for a pond, but it won't get rid of FA; I fish a pond about the size of yours that has an aerator running 24/7 and the FA was awful last year on it, as it was the year before. That pond also had tilapia stocked year before last, and they didn't remotely control the FA.
Grass carp will control it, for much less than what you'd spend on tilapia. However, grass carp love pellet food, so if you ever plan on feeding your bluegill to get them really big, or increase their spawning success for more forage for the bass, the grass carp will hog most of the food once they get big. A better option in my opinion, considering how clear your water is, would be to fertilize beginning in late February, or even mid-February. First check your alkalinity; if it's below 20 ppm, you may need to lime first (cheap, just have to find someone in the area that does it, usually not difficult). Once you get a plankton bloom established, the FA can't grow anymore because the bloom prevents the sunlight from penetrating down through the water to the bottom. An additional benefit is that your fish will grow much faster and larger than they are currently due to a better food chain. Once a bloom is present, you'll only have to fertilize about once a month from February or March through October or November, and sometimes less than that, to keep the bloom going; when you can see a bright white object deeper than eighteen inches, it's time to fertilize.
An aerator would still be good, especially if your area is subject to the severe droughts that parts of your state see; an aerator would prevent a fish kill if there were a major drop in overall acreage in conjunction with a heavy plankton bloom. If you aerate and fertilize, you'll have some big fish.
