I do not believe this game will go to overtime or anything, PSG will win easily within the initial time. I think I will make two bets too, one of them will be just PSG winning, but another will be for 2.5 over in goals, maybe even in margin of victory.

Because that feels like it could happen here. Chelsea doesn't have great defense, hell they do not even have great offense to be fair, and because of that I can see PSG scoring a lot of goals. In that case we are going to end up with better results, and shouldn't be a problem at all. I get that people want to see Chelsea make an upset, because that would make it fun, unexpected results (specially if you are not the fan of the losing team) is a lot more entertaining, but I doubt it is even possible now.