We don't have hogs here in NJ, but I do get several deer a year.
Butcher paper is fine for short term storage, 3 months to 6 months should be plastic wrapped.
For long term storage use a vac-sealer, but I use the vac-sealer for all freezer storage short or long term. Just so much easier to handle and manage.
Humphrey's Down East Beast, Weber Kettle, Kenmore Elite Gasser, Camp Chef Smoker, Camp Chef Denali