chevy 350 tuning HELP

I have a high performence small block high lift cam 9.5 to 1 comp, roller everything anyway what is the best ignition timing should it be set at for max power, the cam in set at 4 degree adv. also how can you tell without gauges if its to lean or too rich , it smells rich, it runs ok , but you can tell its holding back, last but not least, it has a 700r4 tranny, what is the proper way in lame mans terms on how to adjust the kickdown cable(throttle valve) thanks for your help it is greatly app.