Your first post on this forum.
I'm going to say this and it's probably my last post on the topic. You said yourself that the dog is sensitive. IF that is true, the WORST thing in the world you can do to him is take a chance of adding any confusion. Then what do you do?
If you use a specific program and run into problems, people that know the program can easily help you through it.
If you hodgepodge it and run into problems, cures are much harder to find and usually require going back through the steps of a program so that you can then fix it.
Which do you think would be easier on the dog?