Although I don't want to take your precious time, if you are okay, I would like politely to ask you to check if my reasoning is right.
• Through this forum, I learned when I am trying to say something under first type conditional, I can't use "would" in a main clause.
• Also this is not even understood as a mixed conditional although there are <If clause-first type conditional> and <main clause-second type conditional>
• Of course, Longman grammar books also says no usage of "would"
• Also another grammar post says the following.
Thus when I am trying to say possible situation and I am going to predict a likely result with less possibility than one with "will" modal verbs, can I say the thing like this?
For example) Context is that I think she will finishes early. But I am not sure she WILL phone me. But I guess she possibly would
aa. If she finishes the project early, she would phone me (X)
bb. If she finishes the project early, she should / might / could phone me (O)
cc. If she finishes the project early, I would like to dine out with her. (O - It is exceptional case, "would like to do" is one way expressing politeness.)