I doubt that. Intuitives would understand what you're up to, unlike the sensors.
Also, feelers make decisions based on if they are morally right or not, forgetting logic and what makes sense. Feelers won't buy your arguments.
Especially the combination of NF should be rather hard to manipulate, becuase they stick to what they believe in. Idealists.
You're right, though, that Extroverts and Percievers are easier to manipulate, because:
Introverts are harder to get to know, whereas Extroverts can be your friend in a matter of minutes.
Judgers stick to what they know and believe, and stick to a routine, whereas Percievers are open to new experiences and don't expect.
Therefore I deduced that the easiest type to manipulate is the ESTP.
The hardest, is as you probably though by now, the INFJ.
This doesn't surprise me though, because I always believed that one is popular if one can be manipulated. This is also proven by this:
The ESTP is the most popular type in society, whereas the INFJ the most unpopular, proven by another thread on another forum.