Vermont Multifamily Analysis Help

[Micah Rome]

I did a back of the envelope analysis for this 3 unit plus general store building and got the following numbers which seem pretty promising.  What other information should I find out or confirm before making an offer?

Purchase	Cash2Close	Monthly Rent	Prop Tax	Insurance	PM	Mortgage	HOA	Vacancy	Repairs	Total Expenses	Cash Flow	Cap Rate	Cash on Cash
198,000	49500	2900	414	200	290	732	0	290	145	2071	829	9.46%	20.10%

https://heneyrealtors.com/listing/4734232/4520-vt-14-calais-vt-05650/

Thanks