That looks like a great rig for touring. Mavics should be ok, just tune them up before leaving. However, I've had a Mavic rim fracture on tour, severely dented another, and broken many spokes in between. Consider upgrading your rear wheel before anything prolonged (1K+). Additionally, get a fresh tire because the additional weight will make the tread more susceptible to picking up sharp debris.
If heel strike is a problem, rotate your foot forward a bit.
Stay light and fast - there is no point in a dedicated touring bike.