If you hire an independant inspector for your purchase I would think he would note the  missing doors...even without drywall, the studs should be treated wood if exposed to weather.  

The house is approx 1857 living, has granite countertops, tile flooring, and solid wood cabinets.

This involved having hurricane clips installed on two of our properties, cutting our insurance premiums by  40-50%

The units have old wood windows which are different sizes so it will be quite a job I am imagining. 

They got like 3xs what wood land was selling for at the time.

Thanks,CédricHere are the details for both policyA) Statefarm policy: Quote effective date: 04/11/2018Term: 12 Months COVERAGE DESCRIPTION LIMIT/DEDUCTIBLE PREMIUM A - Dwelling - Fire: $ 171,900 $ 222.00A - Dwelling - EC: $ 771.00A - Dwelling - VMM: $ 24.00 Other structures: $ 17,190B - Personal property - Fire: $ 0.00 Deductible: 2% Deductible Fair Rental Value (TDP-017): $ 1,200 $ 65.00 Cap on losses from certain acts of terrorism (TDP-820): Yes DISCOUNTS/SURCHARGES LIMIT/PERCENT PREMIUM Claim history discount / surcharge: $-216.00Volunteer firefighter assessment: $ 0.00 TOTAL TERM PREMIUM $ 866.00(Note I can get 1% deductible for $1,064)B) Lonestar policy [though United P & C (UPC)]

Shaquetta Chittams I would use a 2x2 piece of wood.

Basically seal and insulate the wood.

Rents are at a premium in my area, and I will have very little operating expenses since I will be managing this myself, and my tenants will be responsible for all utilities.

Most people on BP would pay a premium on the price for a low down payment deal (about 10% to me) and lower than market payments.