@Catherine310
Like other hosts have expressed, it's really not a good time to home-share host guests right now, and the best would be to NOT host anyone. Also, are those guests even allowed to travel and are you allowed to host out-of-state guests right now?
With that said...... if you are allowed to and intent on hosting the guests you mentioned above, I think it would be absolutely critical to set some clear ground rules for social distancing within your home, where to hang coats, rules about shoes, washing hands (or hand sanitizer at the entrance) as soon as arriving home, and strict rules for using any shared spaces such as the kitchen, living room and/or bathroom. I would also suggest limiting use of shared spaces to certain times only and you'd have to set up some sort of regular cleaning schedule for all doorknobs and surfaces.
All this should be listed/organized and shared with guests, and they would have to agree to respect all the rules before arriving. I would also think it prudent to ask *in detail* about guest intentions to socially distance while staying at your home, along with the purpose of their stay with you. If they plan on socializing with other friends/family in the area while staying as guests in your home, that would be a huge concern. But also, if they plan to be home all day...... are you sure you are up to having them in the same house 24/7 for the next 3 months? And are you sure you priced yourself adequately for 2 adults staying at home 24/7 for the next 3 months? The impact on your electricity and water bill will be significant, as well as TP consumption. What about other amenities you provide, such as laundry and cooking oil/salt&pepper&spices/condiments? I'm not sure how familiar you are with long-term hosting but it is very different from short-term hosting.
Since they are coming from a different state, have the guests expressed any plans to isolate/quarantine for the first 14 days of arrival? If yes, how would that work in terms of meals and basic supplies? Your safety and sanity are most important, but I'd also hate to see you end up with less than you deserve for hosting them because you underestimated expenses. Good luck~