There are a lot of factors involved in this decision and ultimately you have to decide what is best for you.

I decided to open one today just out of curiosity.

Whatever you decide to do, it should not matter what the tenant says should your thought on improvements that should be made by you (the owner). 

Better to invest in multi units if you do decide to sell.

While I think the financial fundamentals should be your end goals, the micro and macros of population ultimately decides those end numbers.

And, yes, I agree that in the end, it's the sellers who will decide, but I joined this site to see how the world of real estate finance works, and so I do want feedback from people who turn numbers all day long.I sometimes think I have really workable ideas and I need a head check against my gut check to see if I am tracking or tracking like a fox catcher (to paraphrase a popular phrase without reusing the word "crazy.").

I'm heart broken right now cause sellers just decided to cancel the house right before the closing, our closing supposed to be on September 8th and I'm really sad depressed right now, agreement were already signed by both buyers and sellers the inspection were already done even the bank said okay to buying the house. when we asked the sellers why they canceled the deal they said because they has to pay IRS 40k and Government blocked the deal and they can't sell itis there anything I can do cause we wasted 3 months of time and $200 for inspection and we'v also did the insurance for the house.

If you decide to go the SBA route, look at Live Oak Bank.  

I originally bought the home to live in but then decided to rent it out.

Then I decide to sell 5 units of this project and I net $500 k after all expenses, but I decide to keep the other 5 units for more than a year.