My mustang had 3.73's in it, and it would run at 3000 RPM on the highway at 75 mph. With 4.10's you'd be hitting 3000 RPM at 65 mph or maybe even earlier.
4.56's and a spool.
Seriously you may even want to see how much your local rear-end shop can get them for. With them doing the install sometimes you can get a better deal ordering from them.
4.10 are ok for around town, some highway. I personally like my 3.73's.