Double wides in trailer parks

[Beth Doris]

Hello BiggerPockets friends, I have flipped 2 homes thus far and have a three family investment property. I am now ready to invest in several more properties. I am an agent so I have the ability to view the MLS at all times. I have a few questions that I am hoping you can guide me with.

I have built a great report with an investor over the past 6 years. He has several properties in trailer parks (located in Saratoga NY, Saratoga school district) If you are unaware Saratoga is a very prestigious place to live with top rated schools. The parks have rolling hills and plenty of property. He was a serious investor who did not cut any corners. 

He has offered to sell me his three properties all located in one park. One is a 4 bedroom, 2 bathroom double wide. It has a fireplace and granite counter tops. The second and third property are both 3 bedroom, one bathroom. Fully remodeled with granite counter tops as well. The properties are well groomed and all three have new siding and new roofs. 

They are currently rented for 1. $1,400 2. $1,300 and 3. $1,000. He is asking $90,000 for all three of them. He knows he can get more but would like to sell to someone that he knows will continue to take great care of them as he is retiring and moving to Florida. 

The HOA per property is $560.

1. Is this solid deal?

2. I have no experience with trailer parks and I am concerned with holding these properties long term. Any concerns?

3. What is the best way to finance all three together? Can I refinance them if needed to pull money out?

4. Will the HOA's continue to grow to the point where there is no cash flow?

Thanks for your time,

Beth