Intentional Future Tense. Is it okay to use these verbs to express future events that come as a result of a person's intentions or decisions? In english,'to plan to do sth'. The verbs are 'gen antansyon, 'konte', 'panse', 'anvizaje' and 'antansyone'.

Sure.  And also, in this case, we could use kontanple, planifye and GEN POU see both posts in this link.
And you did mean gen entansyon and entansyone, right?
I haven't use ENTANSYONE.

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