Just fine for 3 1/2 season touring. If you were summer or riding I'd say lighten up but for multi season and elevation the gear list increases.
You tent, pad, bike, and sleeping bag will all weight more than someing scaling their equipment to 5'6. It all adds up.
This guy
http://www.rad-fernweh.de
is your size and carries almost 5 kilos of gourmet camera equipment. Going up 2000ft hills he was much slower than I but that's that an extra 50lbs will do.