Have yourself an "OUT" such as a Hedge in case the electronic world gets zapped.
For instance if you trade Globex and it goes down you might Hedge through the CBOT. ES vs YM, as example.
For the internet, you should have a second connection, example, cable and DSL.
Keep your landline phone also, cell phones can be useless sometimes, a phone is also a backup if the entire internet goes down.
Remember the pit at SP500 is still live, honest to goodness real people doing the job, so you might be able to offset ES etc, if you are set up for that.
Get an apartment as close to the Merc as possible...HA...then you can "RUN" over to the MERC...
But be aware this is all part and parcel of electronic world, it is not perfect, never will be. If a problem comes up be aware it is your baby, HANDLE IT!!!!! You can be assured they have their butts covered in all those papers you sign... Be aware, but be protecting #1.......