Sometimes you can look into things too much. It doesn't make a difference that you start/end your test at an uncontrolled airfield. Personally I think it might actually work in your favour.
The school is generally good. The instructors I had taught me well. At the end of the day:
1) I passed the course on minimum hours (and minimum cost).
2) I got a series one attempt one (first time) pass.
It's a busy school, the sims are pretty much in use all day and the aircraft are always flying whenever they are serviceable/the weather is suitable.
Take SEN out the equation. The whole Olympics thing and easyJet operating out of there come April will probably make the airfield somewhere that SFC wont like to operate around.