There are lots of things you can learn before next spring. You can add FHM in November or wait until spring Apr-May. FHM and about all fish species will not grow much over winter when the water is too cold for warmwater fish growth and activity. In the mean time the food chain starting with phytoplankton and zooplankton is developing immediately since you have 6 ft of water. Cool weather insect larvae will quickly establish. Use the winter months to read and plan your goals and how to proceed with what to stock and how to set up your aeration system. There are lots and lots of options for both topics.
First thing to decide is if you are willing to feed the fish pellets. Feeding is not necessary. Pellet feeding results in more, bigger fish on average, if numbers are kept reasonable. If you don't feed the fish number and average sizes tend to be smaller. To have larger fish if you do not feed, the secret is to keep fish numbers real low per acre so the few remaining fish always have lots of natural foods to stay fat and growing.
I think BG & LMB are definite possibilities in your pond. However both tend to overproduce in small ponds. Actually they could be too productive, run out of food, and not do real well as far as good, rapid growth, unless you actively manage to keep their numbers low. Annually trapping, angling and harvesting.
Other options to consider in southern(?)Ontario are trout from Sept to July. Shallow water aeration will usually keep water in a corner open enough for occasional feeding of trout on nice days in winter. Pond will be fishless July&Aug which allows the pond to recover and rebuild the food chain. Annual trout restocking is necessary. This works good if you have a trout farm for restocking within 100 miles of you.
Other options are minnows/shiners, yellow perch (pellet trained or wild), and walleye(WE) or smallmouth bass(SMB)as predators - not both. SMB & WE tend to not work well with BG without special management efforts. Actually WE would be better the better predator for YP, because you have the best, easiest control of the numbers of predators whereas SMB often overpopulate and eliminate the minnows and then eat too many of the small perch leaving too few adult perch for table use. Fixing this involves harvesting some SMB when they become numerous and revelry reduce or eliminate the abundant minnows which is a signal - there are too many bass! Remember larger perch are eating minnows too. IMO 5-8 WE in a perch pond your size would do a pretty good job of keeping perch density lower and yet allow enough minnows/shiners to reproduce especially if there is some weed cover such as hardy hybrid water lilies as habitat and aesthetics. Research proper water lilies (dwarfs & smalls) for small fish ponds.
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