It's going to be a very small pond. I'm thinking Bluegill and just a few bass. I'm a bass fisherman at heart but I love catchin 'gills on the flyrod! It would be something that my nephews and (one day) my kids could spend hours enjoying...catchin a load of fish without a lot of work.
Good luck with your renovation! I'm sure you'll triple your haul of fish. And you could get a little boat and fish from the center of the pond towards the shoreline. You can also improve your bottom structure while the pond is drained!
I know that sounds nuts about the shovel. As a soldier, we didn't have excavators or backhoes...we dug our fighting positions by hand. One position I remember all too well, was in Louisiana...when we were through (3 guys) you could park a truck in the hole and not know it was there. It took 24 hours to dig. Another time was Kentucky...I ticked off my First Sergeant and he made me dig a trench 2 feet deep around the perimiter of our camp. It took me 4 days. I hate shovels.