I would have got married if I were you.
If it was last year, I might have said like others.
But since no one really knows how the game is gonna work, I would never suspend my life for a PR thing.
I mean, in living a personal life, immigration comes after you. It is among the top items, but not the few first.
This is a personal issue. Do as you regret less. If you have made up your mind with marriage, don't hesitate because of PR. this might go for a long time.
In either cases, you would have tough times making your spouse here. it would take almost the same amount of time.