Scott,
Regardless of whether the GG are in the pond, you still are going to want to get some regular bluegill and RES- Redear Sunfish stocked right away. Not very many of your bass will ever get larger than 12 inches on their current diet.
At this stage you have many options, and it all boils down to your exact goals, timeframe, and budget. As far as bluegill stocking, I would recommend stocking adult bluegill ASAP. 50 per acre would surely be more than enough to get your new population started, but you could stock as many as 500 per acre if you would like to get rolling on catching and feeding them this spring.
Also if your goal is panfish, their is no problem at all with stocking and feeding hybrid bluegill in your pond. I would recommend getting them from Pete with Logan Hollow or some other local fish hatchery. An idea would simply be to stock 500 adult hybrids this season, then keep stocking every year however many you harvest in a particular year. Just a thought? You have tons more options when you plan on feeding the fish.
There is no right or wrong way to manage your pond, and you have many, many options on what to make it from here. First thing is to not get discouraged, it doesnt take long to get your fishery where you want it to be. Everybody on this website are literally fish raising geniuses, but also keep in mind that their suggestions and ideas will be somewhat biased towards their ultimate goals and management practices. That has been a big challenge for me to overcome when consulting with pondowners, before any recommendations can be made, I need to know exactly which direction to head.
If you clearly define what you want your pond fishing to be, and how fast you want it to get there, you will get much more direct advice on how to get there.
