There has been a lot of squabbling between FPMT and other Buddhist traditions over the years. It is big enough of a problem that I think you at least need to be aware of it.
You also might want to become aware of the differences between Mahayana and non-Mahayana Buddhism.
I hope that your hard training accelerates your progress to enlightenment and then onto nirvana. (I know that the wrong training can, in extreme instances, actually slow down a person's progress along the path, or even move backwards along the path.)
Is the contemplating suffering part of this tradition? I can't remember where I came across that but contemplating bloating putrid remains exploding in order to totally grasp that suffering was normal...was too much for me... I felt it was written during a time of war or famine that was incredible.
It sounds to me like you have studied this philosophy in a previous reincarnation, and so you find it so comfortable to pick up in this lifetime. Do you get this type of feeling yourself?
A hindi woman told me....we should spend our first 25 years learning, our second 25 years building a career/business and family, our third 25 years giving back, and our forth 25 years meditating and studying....