Replying to Montana Residency For MSU

Hello all,
I am an 18 year old from Michigan trying to chase a dream. I would like to go to Montana state university, but the out of state tuition is driving me away($27,000 vs $7,000 for in state). I have alredy been acepted for fall of 22' and am now in crunch time to decide if i want move and establish residency. I am here to ask if anyone has established residency in Montana before and wondering how much of a pain in the ass it was.