If they are in decent condition paint them, if you have broken doors you can order custom doors from cabinetdoorworld.com.

You'll have a huge amount of the populous with a rate in the 3's that might want to upgrade but selling costs, a more expensive home, and a new rate in the 5's will be a killer.  

It has been in the iOS app since the last upgrade.

You can upgrade here: http://www.biggerpockets.com/proLimits for ads are: Free account = 0Plus account = 3/monthPRO account = 2 unique posts/day, 5 days must pass before relisting

They may need about $10k in minor upgrades. 

Renters will be hard on your home, so upgrading to the picture you posted will only be a waste of money.

Basically whatever notice you require and you don't owe them an explanation but verbally I would say I need to do work in the unit and will upgrade and it is going to take about 2 months (nothing every happens on time).  

Generally I agree with Paul Ashworth especially for the exterior but if a restaurant goes in their restroom needs are going to be a lot different than a doctors office so I wouldn't spend too much upgrading bathrooms until you have a tenant.

I have spent $50,0000 upgrading the home to current, high level finishes, addressed any noted safety concerns by my licensed electrician,  and they signed for home accepting as is.The email was aggressive in nature with no real actionable items or specific concerns other than "GRAVE DANGER". 

here are the fees broken down for the 65k loan.