Essential winter accessories for a Nissan Murano in cold climates?

Hey everyone! I recently picked up a 2021 Nissan Murano and I’ve been absolutely loving the ride so far. However, I just moved from a fairly temperate area to a region where "winter" means five months of sub-zero temperatures and enough snow to bury a mailbox. I’m a bit nervous because this is my first time owning a Murano in these conditions, and I want to make sure I’m fully prepared before the first big blizzard hits.

The AWD system has felt solid during the light flurries we've had, but I know the real test is coming soon. My main concern is protecting the car and making sure it’s reliable when the temperature drops to -20°F. I’ve already been looking into heavy-duty floor liners because I’m terrified of what the road salt and slush will do to the carpets over time. Does anyone have a preference between the Nissan OEM all-season mats or something like WeatherTech or Husky for a perfect fit in the Murano's footwells?

Beyond just the floors, I’m curious about a few specific things for this model. For those of you in the northern states or Canada, have you found an engine block heater to be necessary for the 3.5L V6, or does it usually crank over okay on those brutal mornings? Also, the stock wipers seem a bit flimsy for heavy ice—any recommendations for beefier winter blades that actually fit the Murano's arms without needing a bunch of annoying adapters?

I'm also considering a cargo liner for the back to handle wet gear and maybe some mud flaps to protect the side panels from all the grit and gravel they spray on the roads here. I really want to get everything ordered and installed before I'm stuck digging the car out of a snowbank!

For those of you who have survived a few seasons with your Murano, what are the absolute "must-have" accessories or upgrades you’d recommend for someone facing a harsh winter for the first time?