Help me analyze my first deal!

[Jonathon Larson]

Hello, I am looking at acquiring our first rental property! I would like a little help to make sure I am analyzing it correctly. 

Its a triplex, renting for $700, $525, and $450. Seller is asking $102,000. Located in northern Indiana. 

Monthly:

income: $1675, Mortgage : 390 (after 20% down), Property tax: 142, Insurance $100, management: $168 (10%), Maintenance/etc: $ 167. Tenants pay all utilities. Am I missing anything else? 

That leaves a cash flow of $708/mo.

I have not laid eyes on the inside yet, it may need some upgrades. 

Any help/ advice you can offer would be greatly appreciated! Thank you so much!!!