Trucky,
1. Standardisation course is entirely dependant on who you do it with - but would inlcude teaching general handling eg stalling, ccts etc, plus navigation. Like a mini FIC.
2. Min requirement for commercial instruction is like any other aviation job - the guy with the most experience usually gets hired, some with little experience get lucky. The only legal min is FI (R) rating, but then you can only teach up to SE VFR part of CPL or integrated course.
3. IMC instructor ticket is only good for exactly that, not CPL or IR training. Useful if teaching PPL's however.
4. Yes Cabair instructors get free ME time on ferry flights. But these are at anti-social times and usually involve a long taxi ride home.
You've got nothing to lose by applying - so good luck!
Barney