The range difference between the LR RWD and the LR AWD is pretty small. As the former is no longer available new, and Tesla has tweaked its efficiency numbers since the last time it was offered, it's unclear how big the difference is. As I recall, the last time the LR RWD was sold, it was rated at 325 miles, vs. 310 miles for the LR AWD. Even assuming a charge to 90% and leaving a 10% gap at the bottom, that 310 miles translates to 248 miles, which is 42% over the 175-mile commute distance. That's a comfortable enough gap for all but the very coldest of days. (Charging to 100% on a very cold day when you expect to drive 175 miles is reasonable, so long as you don't do it too often.) The extra ~15 miles (more like ~10 miles under those conditions) of the LR RWD could be useful on rare occasion, but if the commute really is that close to the line on a regular basis, I'd say that any Model 3 isn't adequate, at least not without charging available at work or maybe a Supercharger along the way.