Brian,
Your method would also work great as well. I am too cheap to pay for the "goo-gone" stuff! Let alone the trouble finding it. LOL That's a buck or two off my turbo fund!
As far as gas got spilled on paint.....have you seen anything, like colour degradation, on rear driver-side fender below the gas door yet? I think not. So it should not be a problem at all.
The Infiniti emblem was from the Q45. It actually stands out very well!! Yes, she once said the bigger, the better! LOL...