What is your question Dan?
A) When flying under Part 107 distance from the airport is not an issue. Your flight regulations go specifically by the type of airspace you're in. Class G means you're Good To Fly.
B) Any flight that isn't 100% for hobby (regardless if you make $$ or not) falls under Part 107 Rules unless you're flying for Public Safety Use (Law Enforcement, Search & Rescue etc) and those can fly under a whole other set of rules way to complicated for this conversation.
C) Speculation "work" is still work. Any flight that is not HOBBY is Civil.