I think the FHM, GSH, banded killi combo will be a great forage base start for your pond. Each fish has very different niches so they should all mesh together nicely.
I would stock the CC in the spring with the bass.
Pumpkinseeds are only 1 of 2 native sunfish commonly caught on the Potomac River, the other being the redbreast sunfish which you probably caught plenty of with the rock bass. Pumpkinseeds rarely get large anywhere. Most of the PS I catch in the lower Potomac are less than 6" with the largest being around 8". I caught several nice ones this past weekend as they are bedding now and the males are easy to catch now. I may keep some males next year to stock a pond with.
BG were introduced into the Potomac in the 1800's along with many of the other common gamefish like large, small and rock bass. Redears never seem to be abundant in rivers, I have only caught two in the Potomac in many years of fishing it. They are fairly common in several local lakes and impoundments though. The Potomac and its branches is quite the fishery!
Keep us updated on your progress and take photos of your stocking efforts...
