Purchase price: $2,400,000 Sold a single-family home and did a 1031-exchange into a 5-unit building at a cheaper price.

If you are looking to just calculate profitability, set how much profit you want to make then:ARV - Purchase Costs - Holding Costs - Selling Costs - Desired Profit - Rehab Budget (including contingency) = Maximum Allowable OfferIF you cannot calculate those numbers, a spreadsheet isn't going to help you. 

Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

When the home was purchased, it was conventional loan and the basement had tenants.

For example, if I talked with a PM company and I like what I hear and intend on using them but I have not purchased a rental property yet. 

Quote from @Enrique Toledo: I came across a really good seller financing deal and I would like to purchase it as my first deal but I don’t have enough money for the down payment.can I use a lender of some sort to give me money for the down payment?

I would appreciate any advice on anything I may be missing with putting this together or should neogotiate before finanlizing.Negotiated so far:Property: 9 Unit - 7 Apartments + 2 Commercial Garages (4 unit apt building + 3 unit apt building w/ commercial garage attached + standalone commercial garage on same lot)Background/Why owner is selling: A seasoned builder of 50 years, the owner purchased the property in the 1970s for around $8,000.00, later developing three apartments and two commercial structures.

It is also not an option to not renovate as she came with the house when I purchased it and absolutely trashed the place. 

Purchase price: $645,000 Cash invested: $516,000 80% cash purchase.2,437 sq ft Duplex, with 3b 2b for the front unit (1331), 4b 2b for the back unit (1333).   

Can you easily find cash purchases close to the property and things like that?