If your looking for an apartment to rent, I would look in Summerlin or Henderson in a gated community. They are 15-30 minute drive from the school but you really don't want to live around the school if you can help it. Also, there are usually dental students renting out rooms in their houses if you don't mind living with other people.
As for residency, make sure you get bills, bank accounts, and your driver's license in the state right away so that you can get residency after one year. They are getting very strict about the requirements but no matter what you're looking at paying out of state tuition for the first year.
Congratulations on your acceptance and good luck! 👍