Selling a duplex and was offered this owner finance deal does it make sense?

[Ian Russell]

So I listed a duplex for 495,000 and decided I would also offer owner financing.  Anyways the offer came in like this.  They are also paying all closing costs and real estate fees.     Although they are paying 50,000 over asking they are getting a pretty good deal on the financing of the 500,000 looks like just over 3%.   I don't really need the money now so I am contemplating doing this.  Any thoughts?  Also the duplex is completely paid off.   Lastly just a few numbers on my end I get about 3200 a month coming in.  I pay prop management 8%.  Also taxes and insurance and I pay 1 side utility bill which is 300 a month + any repairs

OFFER (Seller Finance)
Offer Price - $550,000
Monthly Payment - $1,300
COE: On or before 30 days
EMD: $1,500 non refundable EMD due post inspection
Inspection - 7 Business Days
Down Payment - $55,000
On the 72nd month we'll either sell or ideally refinance and pay out your seller their remaining $401,400 that we'd owe. Title would transfer as it would in a normal sale. If payments are missed for a period of 2 months or if we are unable to payout the remaining balance at the end of the balloon term the property is to be quit-claim deeded back to your seller without them having to foreclose on us, keeping our down payment and monthly payments along with any renovations made to the property. We'd accomplish this with a deed of trust that would be attached to the purchase and sale agreement.