Would anyone suggest investing in a single family home in Wendell?

For an initial review would you suggest to simply use the 50% rule and only if the initial metrics pass would you due further due diligence such as request as expense breakdown from the seller?  

Your profile doesn't say where you are located, so it would be very hard for anyone to make a useful suggestion of books or resources.As a new member, there are several things you can do to increase the likelihood of getting helpful responses here on the forum.

I've had people suggest to me to take an FHA loan, but I don't know if it's wise advice considering I'd have a high-interest rate.

She’s been saying she will get the items for over two weeks now but basically is in no rush now because “this is on my record now so I’ll just take my time.”I can see her point but we have been very kind not evicting her earlier.Any suggestions would be appreciated. 

The leases I had includes the option, no time limit, and no specific purchase price.So somewhere along the line, the tenant notifies you he will exercise his option to buy.As to why, plenty of reasons.

Flood insurance and HOA has the biggest impact after $70-$80 per $10k borrowed on mortgage.I suggest getting pre-approved, and yes it will hit your credit

What key info columns would you suggest to make work flow sustainable???

ThIs Is a cash out refI Any suggestions?

Just notify them, per the terms of the lease of course (ours is 30 days notice on month-to-month contracts), that you are exercising your option to terminate the lease.