Method or Booster would also work
Good suggestions so far. I agree that you should demo as many boats as possible. You should also consider whether or not you will have local access to a dealer and/or manufacturer's rep. For your size and weight I would strongly suggest looking at a Perception Method, or a Riot Booster. I personally find the Method much more comfortable, but that is subjective. Both boats would be fairly forgiving for a newbie, and you wouldn't outgow either in the first season. You may have trouble finding either on the used market because the owners are probably out paddling them, but trust me, this is a good sign. Beware super-great deals or boats that seem to be for sale on every corner, there is a reason for it. Happy paddling!
:) Short as life is, we make it still shorter by the careless waste of time. --Victor Hugo