New to TB

So I come from a military background, and am currently in Law enforcement. I have a pretty decent strength and endurance background. I just bought TB 3rd edition, and the conditioning protocol. I heard about TB before and liked the idea of kind of building my own plan, but I had a couple of questions.

1.) Do you guys add any exercises to the end? I love the idea of gaining strength, but do some guys add hypertrophy or run a block of hypertrophy?

2.) Do you guys recommend Base Building? Have you seen any real benefit from it?

3.) Any general tips while on the program? I know this is a generic question, but I am new to TB and it's something I'm trying to do for longevity, and do this program long term.

I am looking forward to getting started. I have constantly programmed hopped and would love to stick to something long term.