TG4,
I tried to answer your question but found I could not because of the stocking parameters involved. Instead, I'll throw out a "discussion" for what ever you think its worth....just thoughts, not answers.
Discussion: My opinion is that the RES could be added without problems, on the order of 50 or so, higher if you want to really push it, but no higher than 100.
The HSB is a totally different question. Presumably you want them to help control the crappie, which with 100 stocked in your size pond, may become overpopulated quickly. The problem comes in with 400 CC. The CC's won't do much to control the crappie, in my opinion, especially if you artificially feed. They will just grow on the feed and if some are not removed, you may have a biomass problem without aeration. The HSB also like artificial feed.
Seven feet deep with 400 CC's and no aeration and black crappie... If it were me, and its not of course, I would remove as many of the CC's as possible and get a real predator in there before the crappie spawn next spring. If you want HSB as your predator, you must understand that they will compete with the CC's for artificial feed and they also prefer deep open water. I think I would choose HSB only if the CC's are to be removed. You might have better luck with LMB as your predator and letting the LMB stunt and populate as long as they will control the crappie.
In any event, I think you have a lot of fishing ahead of you...first to remove CC's as they grow to keep your overall biomass at manageable levels, and also to keep the crappie somewhat in check. You wanted CC's and crappie but to have a viable balanced pond, you're going to have to do a lot of ongoing management, in my opinion.
