Then I did some web scrapping to pull the valuable data and stick them in a spreadsheet. 

You have the same baseline costs to keep the sfr functioning as a $9-1100/mo house, or even a $2200/mo house.Not really enough data provided.. 

This would be my first property and not sure if I am better of putting $112k elsewhere.Attached should be the spreadsheet with all the data. i

Plus they ship directly to you.But the big attraction is that they keep track of how much you've spent on each house or park, so that you have control over those costs and can use that data to make sure you make a profit on each home sold (or at least know where you stand before you price it).Here's an article I wrote about them for my newsletter recently:Why Most Smart Park Owner Are Changing Over To Purchasing Platform To Buy Virtually Everything For Their PropertyIn 2018 we became huge customers of Purchasing Platform – one of their largest.

at the point where you bid on assets you only have a few bits of data on the fc, not the whole picture.

I found listsource.com and I think it is interesting how much data is available. 

Cash flow is also based on multiple assumptions that you are either using historical data or you're guessing. 

If there's a hole, it may be a red flag.b) sensitivity analysis: I examine all the assumptions, and make sure I can live with the worst case scenarios.c) "Stall and see": if they are getting money over multiple years, and there is no penalty for investing later, I would usually wait so I get some real performance data, versus having to look at theoretical pro forma information.d) Recession stress test: I will not invest in anything, until I subject it to recession level stress and see if I can live with the result.

Some cpas prefer quickbooks as they can import data directly but it’s overkill fro most landlords. 

City Data seems to work pretty well for me.