Talador

What kind of accommodation is it you need? Extra cabin? Bigger saloon? Different layout? Something else? If I needed extra cabin I would go with schooner rig and flare the lee hull between the beams to make room for the extra cabin. Bigger saloon... doable if may be not advisable. Different layout or something else... let us hear what you need.

Motoring: I wouldn't have the motors at the stern. Less prop ventilation and better weight distribution if the motors are near the CoG. Two motors should give good handling. If you want more power put on bigger outboard or even better but more complex and more expensive option is to have inboard with retractable prop shaft like this http://www.mcconaghyboats.com/propulsion.html .

I wouldn't worry about the anchoring. I've been once onboard a Visionarry and the anchoring system seemed much more user friendly than the typical monohull system. No need to go to the bows and better weight distribution. Much better on a harryproa for those two reasons alone. Also there is more space around the anchor winch than on monohull bow. You can have the anchors on both ends of the bridge.

Arto