Doc a great start. Those Ray Scott tapes are top notch.

It is often not easy to give good specific cover/structure advice without seeing the entire pond with compass directions (prevailing wind directions make a difference). It appears that you have a long dam that could be short on cover. It is the biggest structure you have and is the only one that gives fish a choice of all bottom depths in one location. It is also adjacent to the biggest area of unused water in the pond from which to draw fish. Below is a link from the archives with links to all types and uses of cover/structure including pics. In placing them I always think first of water depth/thermocline then highways , funnels/shoots , and ambush points for predators and protective cover for forage fish. Take pics when the cover project is finished and make a map for all to access and or use a marking system for the structures as they are hard to find when covered with water.

Structure , cover, etc types and methods
http://www.pondboss.com/ubb/ultimatebb.php?ubb=get_topic;f=22;t=000022


In regards to choices of fish and how to manage them here is a thread on what Dave suggested. With out jumping the gun on on you reading the link I note that you have no pelagic forage fish for the crappie to eat. Those minnows will not last long with LMB present and BG and RES are not real easy for crappie to eat (mouth size- gape limits). I strongly suggest you listen to Dave's advice and read the info on crappie.

Crappie Pond
http://www.pondboss.com/cgi-bin/ubbcgi/ultimatebb.cgi?ubb=get_topic;f=5;t=000461

The best suggestion I can make is learn all you can wrt pond management prior to making final choices of fish and management plans. Basic Pond Management is a book you can get from the PB office . It is easy to read , is concise ,not expensive and will really help . The RS tapes are not enough on the topic of fish and management. Take a look at the archives for the info on PB mag articles and you will see a lot on land management in addition to ponds. I suggest a subscription to the PB mag.

Last I add this idea for thought. Pond /fishing access is critical for enjoyment especially for kids (and sometimes times spouses). Things like docks , swimming , a beach, bank fishing ease and no-hang-up structures where they fish are needed. Also spawning areas and shade near those fishing areas are a big help. Small kids must be kept interested. This means short time periods with lots of action. When you take them fishing take multiple easy to use gear for them and you plan on not fishing.

Good luck , keep asking questions , let us know how things proceed and glad you posted. \:\)