Just as a pointer, I'm running a very beamy 5.45 with a 140 & it's offset by 40mm. The engine has a 21" prop & until I raised the engine 2 holes she landed heavily on her port side. She now comes down neutrally. I also have 170l tank, twin batteries, anchor, 25kg sand etc.
I'd have thought you would be running a 21-23" prop which is a lot of torque to counteract for a relatively small hull. I'd say 1.5" minimum, possibly 2" offset.