Do I really need two power switches?

[dadgummit]

I just finished soldering up the new quark and the neu 1515 1y. Do I really need both power switches or can I solder one up and just use the other?

Also, do you think I should do the heat mod now or should I wait until i have a few runs on it? I have read that some people tried it on new controllers and the thermal tape did not want to let go.
My second hesitation is that Sky + Technology is in Carson, Ca exactly 3.17 miles from my office according to mapquest. It would be really easy to get warranty service, and shipping will cost me just a few cents in gas. (though I would rather do the mod than ruin a day of bashing)