Is seller financing a good Idea?

[Alex Schar]

I initially wanted to house hack a multifamily property on an FHA loan for my first deal, but I came across a duplex that has one half already renovated and the other half with lots of cosmetic issues. The seller will only accept seller financing and their terms are "

Sold as is, seller will do no repairs. 30 year term 8.9 percent interest. Buyer pays all closing except title policy. 10 percent minimum down payment. Loan must be escrowed and buyer pays loan servicing fee of thirty five dollars per month to a third party servicing company. No existing survey.

Should I just stick with FHA? I can get in with a lower down payment elsewhere, and get a lower interest rate as well. Also are seller finance deals re-financeable? I'm very knew to real estate, and still learning. Also what should I expect for closing costs to be?