Don't forget to change your antifreeze concentration. In MN here, you want at least a 50/50 mix or for winter most people will run a 70/30 mix, 70% glycol, 30% water.
With you having a 2wd truck and not used to driving in snow & ice, I would heartily agree on getting the snow tires.
Just make sure that your truck is tuned up and ready. Living in MN isn't as bad as other people make it out to be. I have a friend that moved here from Cali and he has acclimated to life here in just over two years. His vehicles faired well through the transition too.
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