1. I think 5+ lb bass is a fine goal for your location and pond. With a little management, you can probably gow them even larger.
2. Slab crappie- it has not been done consistantly in ponds your size. You are welcome to try it of course, but you have to know the considerable risk you are taking. Also since crappie and intermediate bass compete for the same food items, goal #1 and goal #2 are directly opposed. In my opinion, a successfull crappie pond is such a difficult goal to achieve that you have to focus 100% of your efforts to it. In other words, your bass population would simply be used as a tool to help manage your crappie.
3. a few channel catfish should be no problem and wont stop you from achieving your other goals
4. Other panfish. Wether you want to fish for them or not you need a healthy population of forage fish in order to sustain your predators. Of course if you are going to attempt the crappie pond (no pun intended) everything would need to be reevaluated.
Once you make a firm decision (to crappie or not to crappie) let us know and I am sure everyone will be happy to offer specific advise.
