Hi @David L Miller, congrats on the investment, there is some good advice above regarding the lawn, AC unit, and attic space (leave it as storage if it isn't eligible as a legal bedroom).
I would get the oil tank filled on a routine basis and then bill that back to the tenants. If they let the tank run dry, it can cause significant damage to the heating system because the dried up oil gunks everything up for lack of a better description. Fogel's Oil Service is in our area and can put the property on a routine fill schedule, that way the system doesn't run dry and there is incremental billing every quarter instead of one large hit over the winter months, so easier for tenants to budget accordingly.
Also, I'd recommend keeping the Water/Sewer in your name and then billing the tenant back. Those are lien-able utilities, so if the tenant isn't paying, the water authority can place a lien on the property or at a minimum have you stuck with a large bill to avoid it. When you receive the quarterly bill, forward a copy along to the tenant.
Storage shed I wouldn't bill separately, but build a bit into the rent for it.... too many separate expenses may overwhelm tenants, but for a SFH heating and Water/Sewer expenses are expected in our area... good luck!