After seeing the matchups, it is going to be really difficult for me to wait for some of them for two months. 
I mean especially the PSG - Real Madrid matchup. PSG are going to be the advantageous team in the first leg of this matchup. As I want them to advance, I hope that they can get a nice score at the end of the match. Even if they win by one goal, I believe that they would be advancing by finishing the job in the second leg.
Home away system there will be those who feel lucky and not. But for the hosts of the first leg they have to win big to make them a little comfortable. But in the PSG vs Madrid game this time I don't think they will score many goals. If one wins maybe they will win by a margin of 1 goal. Both teams are great teams, but as a Madrid fan I chose Madrid to win and qualify at the next phase. Obviously there's a winter break and player transfers. At least it will be hard to guess who will qualify. I mean especially the PSG - Real Madrid matchup. PSG are going to be the advantageous team in the first leg of this matchup. As I want them to advance, I hope that they can get a nice score at the end of the match. Even if they win by one goal, I believe that they would be advancing by finishing the job in the second leg.Who will qualify, I can't predict it, for sure every fan wants to qualify for their favorite team, and it looks like both the domestic league and UCL are playing very well, you can say on fire, so later we will look forward to the real match.
And in the transfer window, they will definitely be competing to get the players they want.
Yes the PSG vs. Madrid game is one of the biggest games that could have happened in the whole final round regardless of the stage. Now it is so early that one team with ambitions to win the title has to say goodbye. That's kind of crazy. Madrid would be pissed as much as PSG would be. PSG maybe even more because there is nothing else they can do if they now fail. Messi, Neymar, Mbappe, and many other stars were signed. If they now get kicked out in the first round of the final round, they are into a whole lot of trouble.
If Real Madrid come up to the match against PSG in optimal shape, then PSG will have little chance of making it to the next round in the Champions League. PSG is not a balanced team. They have strong players in attack, but there are not three players in defense at once. Although the match is against Real Madrid will be fundamental for many. A pretty hot game awaits us.