Driving a mismatched spare to the shop Chevy Silverado 2500 4wd

I got a right rear flat yesterday and replaced the flat with a fullsize spare thats a less worn and different model than the others. I'm taking it to the shop tomorrow to have all 5 replaced but am wondering if I should take the backroads in to keep it slow in 2wd or risk the roughly 25 miles of highway driving to the shop.

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Alternatively I can toss the newer rubber on the front axles disengaged though I know it'll handle weird.

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Just trying to save ruining my difs and transfer case at this point.