Where is your source for spotfin and bluntnose? Very doubtful they will have even 1 lb let alone 10 lbs.
Note spotfin are not reported for NC although satinfin and spotfin are very close to the same appearance. Very few can tell them apart. If you are concerned about species introductions use satinfin not spotfin.
FYI Bluntnose are minnows are similar or close to FHM and are not shiners. Shiners belong to the big group called shiners such as golden, emerald, common, etc. Although the golden shiner is unique and belongs to a different genus than most of the other shiners. Fishey people are changing the technical scientific names around all the time. The crevice spawning group that includes spotfins and satinfins has been moved from Notropis to Cypinella.
A full year for the pond to be a bait pond is an EXCELLENT idea and plan. This will be a big help to produce YP.
If you are purchasing shorter narrow leaf submerged plants to colonize the pond another very good one to use is
Dwarf Sagittaria (Sagittaria sublata). A taller variety is Narrow leaf Sagittaria (see below) . It stays short and forms a carpet on the bottom.https://aquariumbreeder.com/dwarf-sagittaria-care-guide-planting-growing-and-propagation/
If you can get lots of them growing I will buy them from you!.
Dwarf sagittaria spreads through runners, and can form the much sought after carpet effect. Dwarf variety should be planted to where it can grow in water deeper than 1 foot since they can grow up to 6 inches (30.5 cm) tall whereas Narrow Leaf Sagittaria grows 12" tall. . Occasionally, if kept in excellent conditions, it may send small white flowers to the surface of the water.