You guys are just a wealth of knowledge and I do appreciate all the good advice. Yes, it would be an ominous job and I don't have a huge budget for it. So how about plan #B.
If I can get a siphon to work or rent a large pump and makes some headway, I might just drain it enough to build a boat ramp and do some pier construction. This would be a big help to me liming it, just being able to get something bigger than a Jon boat into it, like a pontoon boat to use for liming.
I'll have it electrofished as soon as the weather warms up and if my biggest problem is a lot of GSF. Whats the best way to get rid of them besides line and traps? Stock some 6-8" bass and let them eat?