I have a collapsable fuselage. I simply do a figure "9" and when the fuselage hits the ground, it collapses- works every time!

... sorry, I couldn't resist.

On the serious side, what you propose is doable, but you will either have to mount your tail servos in the back half, or be content with connecting, checking, and re-trimming linkages each time you pack and unpack.

I would suggest four bolts, though, as using only two on the top and bottom will not help sideways forces (from the fin/rudder and fuselage slipping) very well. And you might consider stronger bolts (how much do really care about the tail section breaking away a crash?).