Skip the crappie, or be ready to fyke net the heck out of your pond to catch as many of them as you can... Honestly, SMB are not as hard to work with as many make them out to be. Here are some threads on getting then to spawn in ponds:

http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=92626#Post92626

http://www.pondboss.com/forums/ubbthread...true#Post154666

You've got the RRFHM/FHM and GSH in your pond now. You're off to a good start! I am telling you, you'll regret the stocking of crappie in your pond... If you do stock crappie, just hope they don't spawn. I have had small ponds, under an acre that crappies just couldn't pull off a successful spawn in.

Stock:

Next spring 50 SMB and 50 yellow perch(YP).

Next fall, 10 to 20 walleye(WE).

The following spring stock 50 more SMB, and 300 pumpkinseed sunfish(PS).(I'd recommend redear sunfish, but you are too far north for them to survive)

I really think you'll be happy with that stocking. You can also consider adding BG to the mix, but I think PS will do better in your pond.

If you don't want to take any of my advice and not stock any bass and stock crappie, consider stocking more WE. Add at least 30 and no more than 50. They may help keep your crappie under control. Also, hold off on stocking the crappie for a year after you stock your WE. That way the WE have some size to them so that when your crappie first spawn, they'll be big enough to effectively feed on the crappie YOY...