Feedback Request: Practicing Property Assessment

[Account Closed]

Since I'm super new to REI I figured it would be a good idea to start going on Trulia, finding example properties and playing around with numbers in a spreadsheet so I could get some feedback from the community to see what I missed, how far off my assumptions are, and to ask some questions (at the bottom of the post). Constructive feedback is greatly appreciated!

DISCLAIMER: I have no intention of actually buying this property, and anyone looking at this post should take this as a face-value exercise that I did for my own education. 

Here's a link to the spreadsheet: https://docs.google.com/spreadsheets/d/1p1_bi0JjtR...

Property Info

Address: 418 Melvenia St, Indianapolis IN 42619

Assessment From 2015: $47,200

Asking Price: $52,500

Gross Operating Income:

Monthly Rent: $650/mo

Vacancy: -$65/mo (10% of rent)

Total GOI: $585/mo

Operating Expenses:

Real Estate Taxes: -$47/mo (taken from Trulia)

Insurance: -$13/mo (taken from Trulia)

Property Management: -$58.50 (10% of GOI)

Repair Fund: -$58.50 (10% of GOI)

Utilities: $0.00 (utilities in tenant's name)

HVAC Maintenance: -$8.33 ($100 annually)

Accounting / Legal: -41.67 ($500 annually)

Misc: -$12.50 ($150 annually)

Total Operating Expenses: -$239.50/mo

Net Operating Income

$585 GOI - $239.50 Operating Expenses = $345.50/mo

Mortgage

Downpayment: $10,500 (assuming the asking price $52,500 is the purchase price)

Mortgage: $42,000 30 year fixed

Interest Rate: 5% (mortgage calculators default to 3.92% so I bumped it up)

Monthly Payment: -$228/mo

Monthly Profit 

NOI - Mortgage = $117.50 (NOI - Mortgage)

Cap Rate (NOI / Purchase Price)

$4146 Annual NOI / $52,500 Purchase Price = 7.9%

Cash on Cash (Profit / Investment)

$1,410 Annual Profit / $10,500 Downpayment = 13.43%

Questions:

• General feedback? Did I calculate anything incorrectly?
• Where can I find tax info if it's not in the assessor's property card?
• Is there a good way to estimate insurance costs? Are Trulia's estimates reliable?
• How much do you stick aside for repairs? I'll be rolling all of my real estate income back into more investments, but I don't want to be left with too few funds...
• Do you do HVAC maintenance or do you offload that to your tenants? I assume I do so tenants don't forget...
• In Indianapolis is there a need for regular pest control? In FL we used to spray bi-monthly for ants. Again, I assume I would pay for this so the tenant doesn't forget?
• I pulled the accounting / legal number out of thin air; how do you estimate this? I assume this number won't up a lot with every additional property?