Welcome to PBF Jim!
If your pond is 225 x 65 it is approximately 1/3 acre.
..... I am wondering if this pond will be big enough to stock about 15 LMB, 200 BG, and 20 CC that could work into a sustainable fishery???
IMO for a 1/3 acre pond....As RAH said, I would also start with 2 or 3 pounds of FHM and add 50 to 100 RES for parasite control. Assuming you are stocking fingerlings BG, I would go with 400 to get the BG to LMB ratio closer to 30 to 1. I think your LMB and CC numbers are fine. You will probably need to restock the CC from time to time as you harvest them as I doubt they will provide any recruitment.
Please keep us in the loop on your progress and post pics!
Again, welcome!
Bill D.