I'm an INTJ, and I think you're right. He's a mastermind. :)
Deep down, as the consort said, Suu is motivated by love. His pursuit of money was to make a safe place for him and Nadan. But his motivation was love. He knew Nadan had a bounty on him because of his father and that they'd never be safe in Rahan. Suu would die as well if he was caught aiding Nadan.
So he wanted to help the consort so he could amass a fortune and status high enough to cross the border out of Rahan without questions. He was trying to get Nadan to safety, away from where Nadan could be executed if his family background was discovered.
Suu did whatever he felt was needed (even if it cost other people their life) to get Nadan out. Unfortunately he got caught up in the goal and never stopped to think of the person he wanted to save. Or whether they wanted to be saved no matter the cost.
But Suu's personality is not motivated by greed, but by love. That's his true nature.
Everyone is greedy. Su wants power, and who can blame him. He is being played like a ping-pong ball by Jin and, in some respects, by the dragon. The more I read about Jin, the more I dislike his ways. I gues he can't really help it, either, with all the glimpses the author has given us about his past. But he seems th emost conflicted of all th echaracters and seems to have a part in why things are so difficult.
I’m trying to figure out Suu’s personality type any takers from anyone? My guess is that he is an INTJ. Tactical, has incredible intuition, is an introvert, thinks ahead to the point he clearly puts thinking over feeling. Finally he’s absolutely Judging, his judgements are very sound too.