As an investor, what gets my attention is a property that I didn't know about being available at a good price with remotely accurate rehab estimates and ARVs.  

He has a 20th anniversary edition out now.The Book on FLipping Houses by J ScottThe Book on Estimating Rehab Costs by J ScottBuy, Rehab, Rent, Refi, Repeat (BRRRR) by David GreeneAll of these are available at the BP bookstore, Amazon, or any of the arger bookstoresAlso, if there is a local Real Estate Investors Association group around you, join it when it is safe to go to large group meetings. 

Some numbers for the house:PP: $165K10% down + closing costs: $22K (Conventional mortgage for the remaining $148K)Rehab estimate: $30KARV: $220-$230KMortgage/Taxes/Interest: $1K Rent estimate (3BD/2BA): $2,100Some of our mistakes and obstacles along the way:Our handyman was truly terrible.

I’m finding very hard to estimate all the rehab coststhank you! 

Not sure how expensive the LVT you chose is, but I'd definitely want to get other quotes on your bid to get a truer estimate of contracting costs in your area.

So the question is more how the different ratios (or $$$$) react to each other to properly estimate a return.

Just talking rough numbers here with a 100k purchase price, 30k rehab (fairly extensive for a rental), 165k ARV, the estimated cash to close is under 20k with us 

I have looked/called various property managers and their 'estimates' seem to differ from rentometer and even BP's rent analysis.

Estimating Rehab CostsI found these to be an astute introduction to for anyone looking to upgrade their life, knowledge, and situations....What Bigger Pockets books impacted you most? 

I would inquire about the rental history for all of the properties and also try to find out the estimated price for each individual property to see how it compares to the list price.