Pay Off 2 Units before Selling?

[Satyam Mistry]

I have 2 identical condos that are on a 15 year commercial loan at 4.25%. I have had them 4 years and have a combined balance of about $97k left. My ARM is coming up in 1 year as well. It appears my HOA is going to be restricting rentals so I wanted to get the input of other investors if it is worth paying off the remaining loan balance before I sell them 10-12 months from now when both tenants lease ends or just keep them financed?

Numbers for 2 Condos Combined:

Gross Rents - $2100
P&I Payment - $950
Market Value - $210k

If I were to pay off the loans I would be saving about $950 of P&I over 10-12 months before selling so my cash on cash return on the pay off of $97k would be about 10%-12%. Am I calculating everything correctly? I am also assuming there are going to be some fees involved with the ARM refinancing that I will be due for in about 10-12 months if I keep the loans. 

What are your thoughts? Thank you for your input.