Kim, as your description has gotten a lot further along, I agree that you need to see a pro and there are a number in Nashville.
One word on cyanoacrylics.......I've seen more stuff screwed up with the stuff through misapplication and using the wrong product than I care to think about. It does work well in some applications and you have to buy some from a reputable maker like Satellite to get different formulations. If you were ever going to use it to fill a crack, it would have to be a very small (thin) crack and should be done from the inside NOT the outside. I think tere is something on Frank Ford's site about this but I'll let someone else find it. Also, if you use them you need a "remover" product also or you'll likely as not have a bigger problem/mess than when you started.