A few "flexible" answers to your questions...
1) As regards actual hands on flying it is quite a bit. You never have every student up to the same exercise everytime so you may have someone at Ex15 - not much hands on but equally you will have people at Ex4i+ii, lots of hands on. Yes there are demo's but remember the better you demo the better the student picks it up!
2) Lots of PPL's do an IMC in this country because it is not valid outside the UK! You need to have the restiction of "no applied instrument flying" removed but LASORS will give you the criteria for removing this. (I have not removed mine yet).
3) It depends where you are. I cant speak for taildraggers and aero's but at my school we have plenty of trial lessons so there is potential for lots of hands on flying and also the possibility of getting the trial lessonist back for a PPL course, hence more flying.
4) It depends again who your school is. My school employs its instructors and we are paid very well. If you are self employed then you may find that during the winter months things can be a little borderline. Perhaps a retainer may be called for but that is a school decision.
5) Yes!!! Good, hardworking and passionate instructors are just what schools are looking for.
6) East Midlands Flight Instructor School based at Nottingham East Midlands Airport, give them a call. The prices are VERY competitive.
Hope this information helps and that you succeed.
Good luck,
sps