Wrap around/seller carry contract

[Gloria C.]

BACKGROUND of PROPERTY: Thanks in advance for remarks on this topic.  I have a property, 3/4 acre, with house, 3 car garage now outfitted for office space,etc. and rooms over 3-car garage for ???? This property is between Carson City and Reno NV.  Property is commercial zoned, but grandfathered residential. Im being told comps are based on residential (lesser amount), but actually property could be residential living, day care, home based business, etc. which when I bought it, was told commercial is more valuable, due to multiple uses.  Any comments? Is a commercial zoned property more valuable than residential comps?

Now I have an offer but wants me to carry paper (approx. $200K 2-3 yrs.) at 4.4% AND keep the first in place until 2-3 years.  My fear is LOW down payment offer of less than 10%, covid and not paying on first/second....anything else I'm missing?

Thank you one and all!