Another option may be a business line of credit since you have an established business already. 

Even city of Poughkeepsie isn't bad as an investment but I wouldn't want to live there.

If they don't take the money, they just finish the tenancy and vacate in fall of this year which is simply a bad time to bring a property for sale.And yes, I'll be asking them if they are interested to buy as well.Question is - is my offer reasonable?

You can also have one bad sub screw up everything. 

So many Landlords think they can do things better on their own, only to lose money by making big mistakes.Multi-year leases are generally bad.

Too much risk and sets bad boundaries for tenants.Many use Venmo, Zelle or just have tenants deposit at their bank (local branch).There are also several free DIY PM softwares that have rent payment built in, but they charge the tenants a fee to do so (that's how the companies make money).

I know apartments.com used to offer that feature of reporting to credit agencies for free but it's no longer available as a feature. 

You pay an annual fee of $3500, they do a soft credit check, then they give you a loan in monthly increments.

Here are a few below:Generally, buying through your personal name can reduce the interest rate - commercial rates on LLC mortgages are usually higher but you can research thisMost LLCs on incorporation don’t have any credit so it may be difficult to find. a lenderIf you own the property in your personal name you are exposing yourself to more risk and will want to transfer the property into LLC as soon as you canIf you own property in your personal name and transfer to LLC the lender may not allow or can call the entire loanLLC or personal ownership you need insurance.If you search the forums for this topic using the magnifying glass feature in top right corner of your screen on BiggerPockets you will find a lot of discussion on "Quit Claim" "Buying through LLC", "LLC or not" etc....

Typical requirements for a HML: recent bank statements, credit report, appraisal/BPO with as-is and ARV, sales contract, scope of work/budget-draw schedule, track record/previous purchase and sales HUDs/ALTAs showing the construction holdback amount, etc.