@Chris Morris during this time of no evictions, I would tread lightly. They are currently in a month to month lease with the old lease so why rock the boat? You may want these tenants out in two months so signing a year long lease would handcuff you to the one year term, tenants usually leave when they want anyway (usually too costly to go after them).
Last year as our leases expired and the pandemic and riots started we made the decision to do nothing with our rental renewals as they were all paying on time. We did not want to put into their head that they can move. None did and a few asked about renewal which we accommodated.
If your tenants don’t pass the background check do you want an empty unit in March or April? Plan your vacancies to end June through August these are prime months for filling vacancies. When I worked for the major management companies they all had policies in place forbidding leases ending During winter months.