I do know an adjective (without a noun) in this construction can be followed by a to-infinitive, as in:
It is not acceptable to kill a goat in that way.
It is not good to kill him here.
But, is it also grammatical to insert a noun after the adjective without changing anything else in the construction? As in:
It is not a good job to kill a goat that way.
It’s not a wise decision to kill him here.
What I am asking about is the construction in which the to-infinitive modifies the adjective+noun, not the one in which the to-infinitive describes the perception of the doer, like:
It is not an easy question (for me) to deal with.
It is not good / a wise decision [to kill him here].
Your example is acceptable, but the infinitival clause does not modify “good” or “wise decision”. This is a subject extraposition construction where the subordinate clause is an extraposed subject, outside the verb phrase.
The non-extraposed equivalent would be:
[To kill him here] is not good / a wise decision.
Here, the infinitival clause is not a modifier, but subject of the sentence.
The same applies to your other examples.