Commerical Property Funding

I'm in contract to purchase 12 unit Medical Professional Building located in the heart of Adrian, MI.Lenawee County primary medical area. Medical Building is adjacent to the campus of Bixby Medical Center a part of Promedical Health System's North Region 93% occupancy. The seller is asking for a lender commitment letter. 20% LTV, 5.0 Interest rate, 25yr Amortization.Loan $1,120,000.00- Year income -8% vacancy $270,790.04, Expense $73,125.80, NOI $197,664.24 9 Property value at $1.8m)  ccI'm in contract to purchase 12 unit Medical Professional Building located in the heart of Adrian, MI.Lenawee County primary medical area. Medical Building is adjacent to the campus of Bixby Medical Center a part of Promedical Health System's North Region 93% occupancy. The seller is asking for a lender commitment letter. 20% LTV, 5.0 Interest rate, 25yr Amortization.Loan $1,120,000.00- Year income -8% vacancy $270,790.04, Expense $73,125.80, NOI $197,664.24 9 Property value at $1.8m)