CS,
Think on this...pay Enrique to change the plugs and replace the TV switch and have him listen to and check the time chain, he can tell you just by the sound probably. Then go home, the long way and enjoy in for a while, for once.
Then, after you get home and you have had a nap and car has cooled off, go down and change your spark plug wires. The wires will have to come off and get put back on when he changes the plugs and they will be loosened up since they will have been off recently. You should easily be able to do it then. Of just have him do it at the spark plug change time and take a longer nap.
Enjoy.

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Christopher Henkel
1990 190E 2.6 - Arctic white SOLD
1986 190E-16v - Blauswartze
1993 300CE - SOLD
2003 W208 CLK 320 Cabriolet - Magma Red