On the timing: it's general consensus that to tune timing properly it really needs dyno time as lawdog stated. Most people just leave it alone and tune the fuel maps.
On the fuel maps: there are many theories on how to tune rear vs front cylinders. Some folks tune the rear cylinder and then copy the map to the front and add 2 across the map. The best way in my opinion is start with a stable map and tune each cylinder separately with a wideband o2. A few Datalog runs and you will have a pretty danm good map.