I would not rent a house with 4 beds and 1 bathroom on another floor unless I had no other option, or was just getting started in life.I’d comp this below other similarly sized assets, but it’s all about the numbers.

@Ryan Runchey If you are planning to scale up in the future, then QBO is a good option and you can start with the lower tier subscription for a single property, you can upgrade later when you acquire more properties.

I never recommend out-of-state investors buy anything for less than about $55-75k all-in or, generally, it will be in an area that has a mediocre tenant pool with high turnover and bad turns when they leave; the price to rent ration doesn't matter when these items eat up your profit year after year.For multis, it's a little different, but I typically ask them to focus on units that rent for about $500-550 minimum to have an easy time managing them and finding quality tenants. 

In fact, even no one else and lose another month of rental income would be a safer option than to allow this person.

I feel Ike they pivoted quite a bit in the last few years since city and subsequent county license requirements spurred an STR plateau and the motivations are a bit deeper and multi-purposed now.Take parallel economies, such as Uber/Lyft, the ONLY two TNC license holders in the state and each year pay an excise tax of a few hundred thousand a piece, if not more (just for the permit, not including the whats taken from drivers).

Do manufactured/mobile home dealers provide seller financing option to buyers? 

I'm looking to invest in small multi-families in Pennsylvania, ideally in the $80- 120k purchase price range.If possible !

A home equity loan gives you an option of having fixed debt which is safer if you plan on using it to buy a long term rental buy and hold scenario.

First option is to sell the house immediately and utilize those funds (~100k) to supplement the cost. 

I've thought of a HELOC but looking for a longer term solution.Are there any other options?