Vapour Trails
The Renaissance Man
You should be able to reach a higher top speed with 4.10s because of torque multiplication. You will have a better chance against the drag with lower gears. And IMO you will never regret the switch. I have gone 150 in fourth, but not sure how much distance was covered to get there. I will start the bidding at 155 mph.
I agree 4.10s will get you to top speed faster, and the top speed will be increased.
As for 150 in 4th gear, only with 3.31s or 3.55s.