Weight will always be an issue travelling, and hybrids/bridge cameras make good sense in this regard. Pentax Q anyone?
But seriously, the K-r with 18-55 and 55-300 will give you the most lightweight yet capable and fully manual camera with a decent lens set for your travels. It wouldn't weight much more than 1kg, and easily carried around in a small shoulder strap/hand-held camera bag.
Insurance would be handy, but nothing is better insurance than taking care of (and keeping an eye on) your gear in your travels.