The only games on for that week are the Finals. Unfortunately for you it looks like only one team from Mexico City will be in the "Liguilla" or playoffs, this year. Since it is a Final then its fair to say that the energy level will be very high, so will prices, but again there is no guarantee that Cruzazul (only team from Mexico City in playoffs) will even be in the Final.
My personal opinion is that you would be better off in Guadalajara if its the Final you want to see.
Here is the upcoming schedule:
teams play a 2 leg knockout, usually Wed & Sat or Thurs & Sun.
May 2 to May 4, last game of the regular season
May 7 to May 11, "repechaje" or wildcard
May 14 to May 18, quarter finals
May 21 to May 24, semi finals
May 28 to June 1, Final
EDIT:
other teams to look for:
Toluca, not Mexico City but if they reach the Final its a relatively short drive.
Pumas, out of playoffs for now but with a combination of results they could squeeze into a wildcard spot & theyre in Mexico City.
Pachuca, wildcard team, if they manage to make Finals theyre a close drive as well.
Puebla, wildcard team and a close drive, however not likely to make it to the Final.