>>2834821
You can find really lightweight packrafts at around a kilo, but let's say 3-4 kilo including seat and accessories .
Paddle ~1 kilo, at least carbon fiber ones.
Lifejacket, another kilo. There are popular inflatable ones weighing only about 350 gram.

In total it shouldn't really be more than around 5-6 kilo, 11-14 lbs.