Sounds like most are powering it with a 115, but I have reservations about that size engine on that big of a boat. I know why some do though if they refuse to run Mercs with power steering.
The Mercury 115 is really the only way to go on this boat with the anti-feedback handle. Why spend the extra money on a 150 when you only gain 35 HP, you add 100 LBS in motor weight, and add battery and power steering weight? Then you should get a 200, too bad Mercury doesn’t have a naturally aspirated engine in that size. Been in these boats with 115 and 150’s, really no difference, and the 115 with three men and a full tank of gas is just fine, plus you have better trollability.
Call Frank at Rock River Marina in Edgerton, WI at 608-884-9415, they have a 205 tiller with a 115 command thrust and anti-feedback handle in stock and you can try it out at their location.