From what I hear, the CT has more room in the cockpit, but I havent flown one yet - looking forward to it some day however.
I weigh 75kg and my wife only 54kg so we never have a weight problem when loading for a trip, normally we 'cube' out first, although the Tecnam has plenty of space if you know how to pack properly.
We never want to be airborne for 4 hours anyway, although it is nice ot have lots of reserves - generally 2.5 hours is the most we will stay airborne before stopping for a stretch.
The high wing is great for comfort in terms of shade, and taxiiing through gates on properties. It also allows you somewhere to sit and stay dry / in the shade when on the ground, as well as allowing the doors to be opened on the ground if it is raining.