Glad I went with the four point. We use a backrest right now. Never thought I would ever want the tour pak. Now I realize we need it for my wife..Never know when or if you will need the four point, but it's convent if you got it.
I like the 4 point and have it on my bike. The tour pack vibrates a lot where it mounts on the front after a while though.
Take a piece of black electrical tape about 2.5" long, wrap it around the mount. Push the detachable piece over it, rattle gone.
I have a two point on my glide, and a four point on my king. The dyna is a backrest AND rack...the rattling drove me nuts when solo.
For the OP, it's not much more for the 4 point now, rather than buying the 2 point now and having to buy and install a 4 point later..If you keep this bike for any length of time you will be glad you did. As for the locks, Bruckus makes a fine system.
One final note: The mounting brackets are different depending on the year. 09-13 models and '14 models are different. The older ones cannot be transferred to the new bikes.