Hello bt here, maybe i can shed some light about your 205.
i work with pyranha. i'm 155lbs, i have paddled each of the s6x"s.
when you increase your volume to your body weight you will add speed, air and river runability to your boat. BUT you will loose a little control in smaller features and make your flat water moves alittle harder. you have to look at what you paddle, werer do you spend your time???. My tech rep Mike McKee he is your size and lives in Jackson hole. living on the snake the 205 was his choice. i use the smaller boats in CO and i usually are in the larger playboats up north or on larger features. so in all it's up to you, don't let size get in your way, the moves are possible in any size?? later bt