"I am unaware how to check the tax censuses or the estate inventories or where to find those records."
Microfilmed mantalslängder can be ordered from a Family History Center. Look under the name of the county and then the härad. Choose the year, and then the parish and then the farm/village.
There are mantalslängder on the SVAR site, which is fee-based.
Bouppteckningar are kept under the name of the härad (judicial district) and you can order them on microfilm through a Family History Center.
There are quite a few on the fee-based Arkiv Digital site. You can either look under the name of the parish or the name of the härad on Arkiv Digital.