For roam range:
You will need to look in the specific system definition file for that ship system (data/shipsystems/
<shipsystemname>.system). To work out the shipsystem name, you can look in data/hulls/ships.csv and under the entry for apogee look at the 'system id' value (sorry, I can't remember what the name of that system is, sensor_drones maybe?).
The .system file will specify a number of things for that drone system, one of which is roam range, and whether roaming is possible.
For rebuilding over time:
You will need to edit the entry for the shipsystem in data/shipsystems/ship_systems.csv and change the 'regen' value.
Sorry, I'm not really sure what you mean by 'lift the code from the SS+ Arachne'
