Without PA, Biden is toast. He would have to run the table and that is not going to happen. With PA, President Trump has many, many combinations to win. If Trump wins NH, several more possibilities open up.
What I really think: President Trump is going to win all of the states that are not part of the popular vote pack (and maybe one of them). Then is the pack going to give Trump their electors? They will claim it is not in effect yet. True, but if it benefited them they would do it. Giving Trump a moral 50 state victory.
The popular vote pact is in fact not in effect yet, so it’s not even a concern :)