May I ask.......
What is your goal? Just curious. If it is just an alarm/threat dog, that is great. As a personal protection dog (bodyguard), this sort of work is only done as proofing at a very late stages of training, after you have imprinted the foundation of OB (control) and love of the bite. Or you want to create a sentry dog.
Personally, I think a dog that is agitated too much is competely useless as a personal protection dog. A PP dog has to be friendly with the public. I dont' like mistrust. Mistrust creates fear bites. Fear aggression. Defence aggression.
I know Koehler Method of Dog Training advocates this sort of training but what is lacking is the channeling of the dog back into prey (safe) mode, releasing the stress.
It all depends on the dog. I am sure your trainer knows this. The major thing is your dog likes the work.
Don't open up a can of worms you cannot control. I always get nervous of agitation training. I think BULLDOGS, unlike shepard breeds, because they are (majority) so high in defence drive, need to be worked more in PREY or channelled back into prey.
Good luck. I respect anyone that takes training their dogs seriously as you do and being responsible enough to pay for it when they realize they cannot do it themselves.