Risk Assessment

In order to do my thriller, I need to assess:
Location
The locations I hae chosen are; country lane, offce block, home.
The countryside should be easy because it is quieter (few cars) which means I hae more freedom for where I want to place my characters and my camera. The main difficulty might be weather (rain and wind) which would cause the camera to be unstable or even get damaged.
An office block would be difficult, because I would need somewhere extremely quiet unless I was to record sound elsewhere. Could I find a room that looks anything like a call centre? Maybe just a chair and a desk?
A scene at home. Sounds easy, but is it? I would need a tidy room, which I don't have at home. Maybe I could ask a friend?
Props
The props I would need; car, phone.
Whose car could I use? My parents? Can my chosen actors drive their car?
A phone is easy to get (no problemo!)
Costume
I want a formal costume for my call reciever at the the break down serice. Bit expensive? Or is there one that I can get hold of?
Scruffy clothes are pretty easy to find. The actors hae clothes like that.
Actors e.g. reliability
Chosen actors:
Aaron Rilley, been in front of the camera many times, can keep a straight face. Looks mature and would therefore play the call centre role well.
Solomon Rummy-Srciven, filmed before, been in front of the camera before, mature, would play the murderer well.
Jordan Burrows, friendly, been in front of camera before, can keep a straight face, looks young enough to play the young driver.