>>530866992
That's still not right because you two were using the wrong pronouns for yourself. Me is the object pronoun for yourself but I is the subject pronoun for yourself.
You and your wife are the subject of the sentence, which you could replace with "We are going to have some fun with Miku tonight!"
The singular for "We" is "I", the singular conjugation corresponding to "We are" is "I am." For "Me and Miku" as object the pronoun is "Us," not "We."
So if your wife is not coming to hang out with you and Miku, you should say "I am going to have some fun with Miku tonight!"
But what you said is the plural of "Me am going to have some fun with Miku tonight!"
The typical phrasing is "My wife and I are going to have some fun with Miku tonight!"

As for the word order, I'd say that's a lesser grammatical rule. It's similar to the typical order of adjective categories where people almost always say "big red truck" and not "red big truck." Many would say "red big truck" feels weird, but wouldn't go so far as to call it wrong.