OhioScott - My answers would lean in the direction of Dr. Willis�s comments which are intuitive and experienced. Ultimately my main concern with this stocking combination and size of your pond would be with the predator populations being able to "handle the forage base". A lot of discussion has occurred previously about fish combinations of your chosen species. Sift back through the archives. Hopefully I will be able to get time this winter to better organize topics with good answers for questions such as yours for the Archive Section.
Rather than go into a long discussion and complicate the answers that you have already received, I recommend this. Go with your plan, keep good records in a note book about, 1. everything you put in, 2. everything you take out, and 3. the angling catches and 4. their sizes. Report back here each year as to how the fishes are developing. We can help with advice about adjustments. Ponds similar to yours will typically have good fish growth and fishing for the first several years. Then populations make fairly large adjustments regarding densities and population structure of the overall fishery. During this adjustment period it is especially important to monitor size structure of the fishery to maintain your goals that you stated were - "Best outcome would be larger SMB (20" +? eventually) and a self-sustaining population of (up to 11"?) BG and (up to 16"?)YP." Without regular feeding of a high protein food, I predict your fish after 8-10 years with natural forage will top out at SMB 15"-17", BG 9" and YP at 10"-maybe 12", RES 10-11". Keep us informed how well I estimated.
SMB spawning advice. The rocky gravel beds for nesting should ideally be in water 2.5ft to 4 ft deep. Rocks for nesting can be placed in the bottom of cut-off 55 gal barrels (sides or ends) for containment of rocks in mud bottomed ponds. Truck or tractor tires could be used. Nest sizes for SMB do not need to be much larger than 2 �3 ft diameter if rock supply is limited. Note the size of the substrate in the photo reference provided above by Theo. Some of those rocks are a little large sized to be ideal in my opinion. I suggest a mixture of mostly golf ball to grapefruit sized stones for the nest basin. Hatcheries usually use golf ball sized stones. It would be best, but not necessary, to have one larger rock (cement block or 5 gal bucket sized) or sunken log on one edge or side of each nest. See referenced photos for examples.
Good luck and keep us informed about the progress of your pond by occasionally returning to this specific topic.
