Aetius,
You don't say which BA transport type you're going to do the acceptance test on, but may I suggest you contact the Chief of Production Flight Test at either Dorval or Downsview and discuss the procedures and your concerns.
Safetypee is correct that the aircraft will already be fully wrung out as far as systems & performance are concerned (including stall speeds which are also verified to be at the correct AoA). Some of the tests he recommends probably fall into the higher risk categories and thus may not be available under BA's ground rules especially with extra passengers on board (see Flt Scientist's post in the TP Duties thread). Remember all BA types are T-tails with the usual characteristics of that design feature so no stall test should be taken lightly. If there is a particular evolution you wish to carry out, it may be possible to get stick time on the dedicated flight test aircraft at BFTC in Wichita that have additional crew safety systems.