You sound you're in the 10-15 lbs base pack weight range - I'd go with a frameless pack stuffed in a pannier, and depending upon the ground mattress/pillow you use, you can sometimes use them as frames. I have a old ~30L frameless pack that rolls up into 1-2L, and weights 1 lb, 3oz that would be good for that. That Osprey Talon 33 looks like it has a substantial sheet frame, and full hip belt... that's going to be pretty bulk to stuff in a pannier. Then again, maybe I can try again to tip you toward a folding bike - lots of folks tour on them with full backpacking backpacks mounted on the back .