I got a rough estimate some years ago of several thousand to replace, which would wipe out more than a handful years of cash flow as this stands. 

The rent rates are cautiously 1200/monthThe tenant will pay utilities and rental insurance I'm estimating is 100 a month.The taxes are 2k/yearly.I will be managing this property myself.Thank you!

I think it was good by learning under a GC to accurately estimate and do repairs but be careful not to let that be where you're stuck. 

The amount to bring current is an estimate until you get in writing how much is needed from the bank including legal costs and unpaid taxes.

I will keep it updated when i have further detail.

Not what you want to hear and I don't have the details on your park so I could be way off base, but if it were me, I'd:-Get the homes up to the standard you envision for the park. 

Rentometer actually allows you to pick the type of property, then gives you an estimate based on similar properties in the area.

If you pay for theirs, the rent you charge will probably be higher, which will filter out a lot of tenants before they look at the details of why you're higher. 

@Nate Stitchell reach out to a lender for more details, but you can always use an FHA unless you already have used one.

To give you more detail I own two properties one of them is a condo and the other is a multi-family.