If i were him i would add more to the money if this guy wants to bring his goons to add on the condition at least be a bit more greedy and mess him up by bankruptcy >;D
I feel like there's another meaning for being stinky like ferret i think i heard they rub themselves or something to know they owned a ferret idk if its a ferret or not but i heard there's an animal that does that or i just read that to another manga xD
Theory time
Im guessing his Skill' goal will be finishing all the heroes journey/goal like defeating the demon lord while the end will either pick one world to stay in or this might end only in one story cuz its pretty expecting enough if they achieve their goal and thats the end of it i think...
I bet you the last one will be him considering the fact that he can change people's fate like what if he accidentally made one person a villain if not "Its just a (Game) Theory" xD