Who determines what is reasonable? Opinions are all over the map, just like asking if a cam is too big or too small. You mentioned it’s not a huge difference between a 3.55 and a 4.10, so I say go with the 4.10. Why do I say that? Because I run a 4.10 w/27” tires and run down the interstate every now and then on 30+ mile jaunts to work during rush hour, above the speed limit to keep up with traffic or in most cases just blowing by everyone for extended periods. These posts saying it gets old running low gears at higher speeds for any length of time just sound like old softies to me. Is it a hot rod or what?! Some of these guys should just get a loaded Chrysler Newport or similar if low rpm sailing is what one wants! LOL:p